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Part # Short Part # Series Make Engine Type Material Rear Main Seal Balance Stroke Rod Length Rod Journal

4-231-3400-5970 423010 Standard Weight Buick 231 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.400 5.970 2.249

4-231-3625-5970 423015 Standard Weight Buick 231 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.625 5.970 2.249

4-302-300-54-2123-2 43021-2 Pro Series Lightweight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.000 5.400 2.123

4-302-300-54-2123-3 43021-3 Superlight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.000 5.400 2.123

4-302-3000-5090-2123 43021 Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece External 28oz Balancer 3.000 5.090 2.123

4-302-3000-5090-2123-I 43021-I Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.000 5.090 2.123

4-302-3000-5155-2123-I 43015-I Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.000 5.155 2.123

4-302-3000-5400-2100 43011 Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.000 5.400 2.100

4-302-3250-54-2123-2 43022-2 Pro Series Lightweight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.250 5.400 2.123

4-302-3250-54-2123-3 43022-3 Superlight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.250 5.400 2.123

4-302-3250-5400-2100 43012 Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.250 5.400 2.100

4-302-3250-5400-2123 43022 Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece External 28oz Balancer 3.250 5.400 2.123

4-302-3250-5400-2123-I 43022-I Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.250 5.400 2.123

4-302-3400-54-2123-2 43023-2 Pro Series Lightweight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.400 5.400 2.123

4-302-3400-54-2123-3 43023-3 Superlight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.400 5.400 2.123

4-302-3400-5400-2100 43013 Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece External 28oz Balancer 3.400 5.400 2.100

4-302-3400-5400-2123 43023 Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece External 28oz Balancer 3.400 5.400 2.123

4-302-3400-5400-2123-I 43023-I Standard Weight Ford 302 Small Block Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.400 5.400 2.123

4-305-3480-5700-1 430510-1 Standard Weight Chevy 305 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.100

4-305-3500-5700-1 430520-1 Standard Weight Chevy 305 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.100

4-340-3580-6123 434010 Standard Weight Chrysler 340 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 3.580 6.123 2.125

4-340-3580-6123-2 434010-2 Pro Series Lightweight Chrysler 340 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 3.580 6.123 2.125

4-340-3580-6123-3 434010-3 Superlight Crankshaft Chrysler 340 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 3.580 6.123 2.125

4-340-4000-6123 434020 Standard Weight Chrysler 340 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.000 6.123 2.125

4-340-4000-6123-2 434020-2 Pro Series Lightweight Chrysler 340 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.000 6.123 2.125

4-340-4000-6123-3 434020-3 Superlight Crankshaft Chrysler 340 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.000 6.123 2.125

4-350-3000-5700 435005 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.000 5.700 2.100

4-350-3250-5700 435006 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.250 5.700 2.100

4-350-3335-5700-20LW 435011LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.335 5.700 2.000

4-350-3350-5700-3-18 435008-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.350 5.700 1.888

4-350-3350-5700-3-20 435007-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.350 5.700 2.000

4-350-3480-5700 435010 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-1 435010-1 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-18LW 435020LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 1.888

4-350-3480-5700-2 435010-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-2-18 435018-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 1.888

4-350-3480-5700-2-20 435012-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.000

4-350-3480-5700-20 435010-20 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.000

4-350-3480-5700-20LW 435021LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.000

4-350-3480-5700-21LW 435022LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-3 435010-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-3-18 435018-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 1.888

4-350-3480-5700-3-20 435012-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.000

4-350-3480-5700-L 435010L Standard Weight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-L-2 435010L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.480 5.700 2.100

4-350-3480-5700-L-2-20 435012L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.480 5.700 2.000

4-350-3480-5700-L-3 435010L-3 Superlight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.480 5.700 2.100

4-350-3500-5700 435020 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.100

4-350-3500-5700-18LW 435030LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 1.888

4-350-3500-5700-2 435020-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.100

4-350-3500-5700-2-18 435028-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 1.888

4-350-3500-5700-2-20 435022-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.000

4-350-3500-5700-20 435020-20 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.000

4-350-3500-5700-20LW 435031LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.000

4-350-3500-5700-21LW 435032LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.100

4-350-3500-5700-3 435020-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.100

4-350-3500-5700-3-18 435028-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 1.888

4-350-3500-5700-3-20 435022-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.000

4-350-3500-5700-L-2-20 435022L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.500 5.700 2.000

4-350-3562-5700 435030 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.562 5.700 2.100

4-350-3562-5700-2 435030-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.562 5.700 2.100

4-350-3562-5700-2-20 435032-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.562 5.700 2.000

4-350-3562-5700-3 435030-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.562 5.700 2.100

4-350-3562-5700-3-20 435032-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.562 5.700 2.000

4-350-3562-5850-20LW 435041LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.562 5.850 2.000

4-350-3625-5700 435040 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.625 5.700 2.100

4-350-3625-5700-2 435040-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.625 5.700 2.100

4-350-3625-5850-20LW 435051LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.625 5.850 2.000

4-350-3750-5700 435050 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.100

4-350-3750-5700-2 435050-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.100

4-350-3750-5700-2-20 435052-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.000

4-350-3750-5700-3 435050-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.100

4-350-3750-5700-3-20 435052-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.000

4-350-3750-5700-L 435050L Standard Weight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.750 5.700 2.100

4-350-3750-5700-L-2 435050L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Int Front, Ext Rear Bal 3.750 5.700 2.100

4-350-3750-5700-L-2-20 435052L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Int Front, Ext Rear Bal 3.750 5.700 2.000

4-350-3750-5700-L-3 435050L-3 Superlight Chevy 350 Small Block Forged 4340 Steel 1-Piece Int Front, Ext Rear Bal 3.750 5.700 2.100

4-350-3750-6000 435056 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-350-3750-6000-2 435056-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-350-3750-6000-2-20 435057-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.000

4-350-3750-6000-20 435056-20 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.000

4-350-3750-6000-20LW 435061LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.000

4-350-3750-6000-21LW 435062LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-350-3750-6000-3 435056-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-350-3800-5700-L 435060L Standard Weight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.800 5.700 2.100

4-350-3800-5700-L-2-20 435062L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Int Front, Ext Rear Bal 3.800 5.700 2.000

4-350-3800-5700-L-3 435060L-3 Superlight Chevy 350 Small Block Forged 4340 Steel 1-Piece Int Front, Ext Rear Bal 3.800 5.700 2.100

4-350-3800-6000 435066 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.100

4-350-3800-6000-2 435060-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.100

4-350-3800-6000-2-18 435068-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 1.888

4-350-3800-6000-2-20 435062-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.000

4-350-3800-6000-20 435066-20 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.000

4-350-3800-6000-3 435060-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.100

4-350-3800-6000-3-18 435068-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 1.888

4-350-3800-6000-3-20 435062-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.000

4-350-3800-6000-L 435066L Standard Weight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.800 6.000 2.100

4-350-3800-6000-L-2 435066L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.800 6.000 2.100

4-350-3800-6000-L-3 435066L-3 Superlight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.800 6.000 2.100

4-350-3875-6000 435076 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

4-350-3875-6000-2 435076-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

4-350-3875-6000-2-20 435077-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.000

4-350-3875-6000-20LW 435065LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.000

4-350-3875-6000-3 435076-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

4-350-3875-6000-3-20 435077-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.000

4-350-3875-6000-L 435076L Standard Weight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.875 6.000 2.100

4-350-3875-6000-L-2 435076L-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.875 6.000 2.100

4-350-3875-6000-L-3 435076L-3 Superlight Chevy 350 Small Block Forged 4340 Steel 1-Piece Internal Balance 3.875 6.000 2.100

4-350-4000-6000 435086 Standard Weight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-350-4000-6000-2 435086-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-350-4000-6000-2-20 435087-2 Pro Series Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.000

4-350-4000-6000-21LW 435072LW F43 Lightweight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-350-4000-6000-3 435086-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-350-4000-6000-3-20 435087-3 Superlight Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.000

4-351C-3500-6000 4351C16 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.500 6.000 2.100

4-351C-3500-6000-2 4351C16-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.500 6.000 2.100

4-351C-3500-6000-3 4351C16-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.500 6.000 2.100

4-351C-3750-6000 4351C26 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.750 6.000 2.100

4-351C-3850-6000 4351C36 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.000 2.100

4-351C-3850-6000-2 4351C36-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.000 2.100

4-351C-3850-6000-3 4351C36-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.000 2.100

4-351C-3850-6200 4351C45 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.200 2.100

4-351C-3850-6200-2 4351C45-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.200 2.100

4-351C-4000-6000 4351C46 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.000 2.100

4-351C-4000-6000-2 4351C46-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.000 2.100

4-351C-4000-6000-3 4351C46-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.000 2.100

4-351C-4000-6200 4351C50 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.200 2.100

4-351C-4000-6200-2 4351C50-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.200 2.100

4-351C-4000-6200-3 4351C50-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.200 2.100

4-351C-4100-6200 4351C60 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.100 6.200 2.100

4-351C-4100-6200-2 4351C60-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.100 6.200 2.100

4-351C-4100-6200-3 4351C60-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.100 6.200 2.100

4-351C-4250-6125 4351C62 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.125 2.100

4-351C-4250-6200 4351C65 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.200 2.100

4-351C-4250-6200-2 4351C65-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.250 2.100

4-351C-4250-6200-3 4351C65-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.250 2.100

4-351C-4250-6250 4351C66 Standard Weight Ford 351 Cleveland Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.250 2.100

4-351C-4250-6250-2 4351C66-2 Pro Series Lightweight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.250 2.100

4-351C-4250-6250-3 4351C66-3 Superlight Ford 351 Cleveland Main Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.250 6.250 2.100

4-351W-3500-6000 4351W16 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Internal Balance 3.500 6.000 2.100

4-351W-3500-6000-2 4351W16-2 Pro Series Lightweight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.500 6.000 2.100

4-351W-3500-6000-3 4351W16-3 Superlight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.500 6.000 2.100

4-351W-3750-6000 4351W20 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.750 6.000 2.100

4-351W-3750-6125 4351W30 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.750 6.125 2.100

4-351W-3850-6125 4351W40 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.125 2.100

4-351W-3850-6125-2 4351W40-2 Pro Series Lightweight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.125 2.100

4-351W-3850-6125-3 4351W40-3 Superlight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.125 2.100

4-351W-3850-6200 4351W45 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.200 2.100

4-351W-3850-6200-2 4351W45-2 Pro Series Lightweight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.200 2.100

4-351W-3850-6200-3 4351W45-3 Superlight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 3.850 6.200 2.100

4-351W-4000-6200 4351W50 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.200 2.100

4-351W-4000-6200-2 4351W50-2 Pro Series Lightweight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.200 2.100

4-351W-4000-6200-3 4351W50-3 Superlight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.000 6.200 2.100

4-351W-4100-6200 4351W60 Standard Weight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.100 6.200 2.100

4-351W-4100-6200-2 4351W60-2 Pro Series Lightweight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.100 6.200 2.100

4-351W-4100-6200-3 4351W60-3 Superlight Ford 351 Windsor Forged 4340 Steel 1-Piece, 2-Piece Int Bal, May Req Heavy Metal 4.100 6.200 2.100

4-360-3580-6123 436010 Standard Weight Chrysler 360 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 3.580 6.123 2.125

4-360-3580-6123-2 436010-2 Pro Series Lightweight Chrysler 360 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 3.580 6.123 2.125

4-360-3580-6123-3 436010-3 Superlight Crankshaft Chrysler 360 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 3.580 6.123 2.125

4-360-4000-6123 436020 Standard Weight Chrysler 360 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.000 6.123 2.125

4-360-4000-6123-2 436020-2 Pro Series Lightweight Chrysler 360 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.000 6.123 2.125

4-360-4000-6123-3 436020-3 Superlight Crankshaft Chrysler 360 Small Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.000 6.123 2.125

4-383-3750-6760-2374 438310 Standard Weight Chrysler 383 "B" Block Wedge Forged 4340 Steel 2-Piece 6-Bolt Flywheel Flange 3.750 6.760 2.374

4-383-4150-6760-2374 438320 Standard Weight Chrysler 383 "B" Block Wedge Forged 4340 Steel 2-Piece 6-Bolt Flywheel Flange 4.150 6.760 2.374

4-4.6L-3750-5850-20 46L020 Standard Weight Ford 4.6L 4.6L Modular Forged 4340 Steel 1-Piece Int Bal, 8-Bolt Rear Flange 3.750 5.850 2.000

4-400-3500-5700 440026 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 6.000 2.100

4-400-3500-6000-2 440026-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 6.000 2.100

4-400-3500-6000-3 440026-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 6.000 2.100

4-400-3750-5700 440050 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.100

4-400-3750-5700-2 440050-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.100

4-400-3750-5700-3 440050-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 5.700 2.100

4-400-3750-6000 440056 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-400-3750-6000-2 440056-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-400-3750-6000-3 440056-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

4-400-3800-6000 440066 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.100

4-400-3800-6000-2 440066-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.100

4-400-3800-6000-2-18 440068-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 1.888

4-400-3800-6000-2-20 440067-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.000

4-400-3800-6000-20 440066-20 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.000

4-400-3800-6000-3 440066-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.100

4-400-3800-6000-3-18 440068-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 1.888

4-400-3800-6000-3-20 440067-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 6.000 2.000

4-400-3875-6000 440076 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

4-400-3875-6000-2 440076-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

4-400-3875-6000-2-20 440077-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.000

4-400-3875-6000-3 440076-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

4-400-4000-6000 440086 Standard Weight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-400-4000-6000-2 440086-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-400-4000-6000-2-20 440087-2 Pro Series Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.000

4-400-4000-6000-21LW 440072LW F43 Lightweight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-400-4000-6000-3 440086-3 Superlight Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

4-400P-4000-6700-2200 4400P42010 Standard Weight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.000 6.700 2.200

4-400P-4000-6700-2200-2 4400P42010-2 Pro Series Lightweight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.000 6.700 2.200

4-400P-4000-6700-2200-3 4400P42010-3 Superlight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.000 6.700 2.200

4-400P-4250-6700-2200 4400P42510 Standard Weight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.250 6.700 2.200

4-400P-4250-6700-2200-2 4400P42510-2 Pro Series Lightweight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.250 6.700 2.200

4-400P-4250-6700-2200-3 4400P42510-3 Superlight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.250 6.700 2.200

4-400P-4500-6700-2200 4400P45010 Standard Weight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.500 6.700 2.200

4-400P-4500-6700-2200-2 4400P45010-2 Pro Series Lightweight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.500 6.700 2.200

4-400P-4500-6700-2200-3 4400P45010-3 Superlight Pontiac 400 3.000" Main Forged 4340 Steel 2-Piece 4.500 6.700 2.200

4-409-4000-6135 440910 Standard Weight Chevy 409 Small Block Forged 4340 Steel 2-Piece External Balance 4.000 6.135 2.200

4-426-3750-6760-2374 4426010 Standard Weight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 3.750 6.760 2.374

4-426-3750-6760-2374-2 4426010-2 Pro Series Lightweight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 3.750 6.760 2.374

4-426-3750-6760-2374-3 4426010-3 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 3.750 6.760 2.374

4-426-3763-6760-2374 4426011 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 3.763 6.760 2.374

4-426-4150-6760-2374 4426014 Standard Weight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.150 6.760 2.374

4-426-4150-6760-2374-2 4426014-2 Pro Series Lightweight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.150 6.760 2.374

4-426-4150-6760-2374-3 4426014-3 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.150 6.760 2.374

4-426-4150-6800-2200 4426013 Standard Weight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.150 6.800 2.200

4-426-4150-6800-2200-2 4426013-2 Pro Series Lightweight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.150 6.800 2.200

4-426-4150-6800-2200-3 4426013-3 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.150 6.800 2.200

4-426-4250-6800-2200 4426015 Standard Weight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.250 6.800 2.200

4-426-4250-6800-2200-2 4426015-2 Pro Series Lightweight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.250 6.800 2.200

4-426-4250-6800-2200-3 4426015-3 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.250 6.800 2.200

4-426-4500-6760-2374 4426020 Standard Weight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.500 6.760 2.374

4-426-4500-6760-2374-2 4426020-2 Pro Series Lightweight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.500 6.760 2.374

4-426-4500-6760-2374-3 4426020-3 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.500 6.760 2.374

4-426-4500-6800-2200 4426018 Standard Weight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.250 6.800 2.200

4-426-4500-6800-2200-2 4426018-2 Pro Series Lightweight Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.500 6.800 2.200

4-426-4500-6800-2200-3 4426018-3 Superlight Crankshaft Chrysler 426 Late Hemi Forged 4340 Steel 2-Piece 8-Bolt Flywheel Flange 4.500 6.800 2.200

4-429-4300-6700-220-2 44294300-2 Pro Series Lightweight Ford 429 Boss 429 Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.300 6.700 2.200

4-429-4300-6700-220-3 44294300-3 Superlight Ford 429 Boss 429 Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.300 6.700 2.200

4-429-4300-6700-2200 44294300 Standard Weight Ford 429 Boss 429 Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.300 6.700 2.200

4-429-4500-6700-220-2 44294500-2 Pro Series Lightweight Ford 429 Boss 429 Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.500 6.700 2.200

4-429-4500-6700-220-3 44294500-3 Superlight Ford 429 Boss 429 Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.500 6.700 2.200

4-429-4500-6700-2200 44294500 Standard Weight Ford 429 Boss 429 Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.500 6.700 2.200

4-440-3750-6760-2374 444010 Standard Weight Chrysler 440 "RB" Block Wedge Forged 4340 Steel 2-Piece 6-Bolt Flywheel Flange 3.750 6.760 2.374

4-440-4150-6760-2374 444014 Standard Weight Chrysler 440 "RB" Block Wedge Forged 4340 Steel 2-Piece 6-Bolt Flywheel Flange 4.150 6.760 2.374

4-440-4500-6760-2374 444020 Standard Weight Chrysler 440 "RB" Block Wedge Forged 4340 Steel 2-Piece 6-Bolt Flywheel Flange 4.500 6.760 2.374

4-454-3766-6135-C 445405C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 3.766 6.135 2.200

4-454-3766-6135-C-2 445405C-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 3.766 6.135 2.200

4-454-3766-6135-C-3 445405C-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 3.766 6.135 2.200

4-454-4000-6135 445410 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece External Balance 4.000 6.135 2.200

4-454-4000-6135-L 445410L Standard Weight Chevy 454 Big Block Forged 4340 Steel 1-Piece External Balance 4.000 6.135 2.200

4-454-4000-6385 445415 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.385 2.200

4-454-4000-6385-2 445415-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.385 2.200

4-454-4000-6385-3 445415-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.385 2.200

4-454-4000-6385-C 445415C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.000 6.385 2.200

4-454-4000-6385-C-2 445415C-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.000 6.385 2.200

4-454-4000-6385-C-3 445415C-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.000 6.385 2.200

4-454-4250-6135 445420 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece External Balance 4.250 6.135 2.200

4-454-4250-6135-L 445420L Standard Weight Chevy 454 Big Block Forged 4340 Steel 1-Piece External Balance 4.250 6.135 2.200

4-454-4250-6385 445425 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.250 6.385 2.200

4-454-4250-6385-2 445425-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.250 6.385 2.200

4-454-4250-6385-3 445425-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.250 6.385 2.200

4-454-4250-6385-C 445425C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.250 6.385 2.200

4-454-4250-6385-C-2 445425C-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.250 6.385 2.200

4-454-4250-6385-C-3 445425C-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.250 6.385 2.200

4-454-4250-6385-L 445425L Standard Weight Chevy 454 Big Block Forged 4340 Steel 1-Piece Internal Balance 4.250 6.385 2.200

4-454-4375-6385 445426 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.375 6.385 2.200

4-454-4375-6385-2 445426-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.375 6.385 2.200

4-454-4375-6385-3 445426-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.375 6.385 2.200

4-454-4375-6385-C 445426C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.375 6.385 2.200

4-454-4375-6385-C-2 445426C-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.375 6.385 2.200

4-454-4375-6385-C-3 445426C-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.375 6.385 2.200

4-454-4375-6535 445428 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.375 6.535 2.200

4-454-4500-6535 445430 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.500 6.535 2.200

4-454-4500-6535-2 445430-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.500 6.535 2.200

4-454-4500-6535-3 445430-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.500 6.535 2.200

4-454-4500-6535-C 445430C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.500 6.535 2.200

4-454-4500-6535-C-2 445430C-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.500 6.535 2.200

4-454-4500-6535-C-3 445430C-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.500 6.535 2.200

4-454-4500-6535-L 445430L Standard Weight Chevy 454 Big Block Forged 4340 Steel 1-Piece Internal Balance 4.500 6.535 2.200

4-454-4625-6535-C 445435C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.625 6.535 2.200

4-454-4750-6700 445440 Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.750 6.700 2.200

4-454-4750-6700-2 445440-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.750 6.700 2.200

4-454-4750-6700-3 445440-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.750 6.700 2.200

4-454-4750-6700-C 445440C Standard Weight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.750 6.700 2.200

4-454-4750-6700-C-2 445440C-2 Pro Series Lightweight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.750 6.700 2.200

4-454-4750-6700-C-3 445440C-3 Superlight Chevy 454 Big Block Forged 4340 Steel 2-Piece W/Center CWT's Internal Balance 4.750 6.700 2.200

4-455P-4250-6700-2200 4455P42510 Standard Weight Pontiac 455 3.250" Main Forged 4340 Steel 2-Piece 4.250 6.700 2.200

4-455P-4250-6700-2200-2 4455P42510-2 Pro Series Lightweight Pontiac 455 3.250" Main Forged 4340 Steel 2-Piece 4.250 6.700 2.200

4-455P-4250-6700-2200-3 4455P42510-3 Superlight Pontiac 455 3.250" Main Forged 4340 Steel 2-Piece 4.250 6.700 2.200

4-455P-4500-6700-2200 4455P45010 Standard Weight Pontiac 455 3.250" Main Forged 4340 Steel 2-Piece 4.500 6.700 2.200

4-455P-4500-6700-2200-2 4455P45010-2 Pro Series Lightweight Pontiac 455 3.250" Main Forged 4340 Steel 2-Piece 4.500 6.700 2.200

4-455P-4500-6700-2200-3 4455P45010-3 Superlight Pontiac 455 3.250" Main Forged 4340 Steel 2-Piece 4.500 6.700 2.200

4-460-4150-6700-220-2 44604150-2 Pro Series Lightweight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.150 6.700 2.200

4-460-4150-6700-220-3 44604150-3 Superlight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.150 6.700 2.200

4-460-4150-6700-2200 44604150 Standard Weight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.150 6.700 2.200

4-460-4300-6700-220-2 44604300-2 Pro Series Lightweight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.300 6.700 2.200

4-460-4300-6700-220-3 44604300-3 Superlight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.300 6.700 2.200

4-460-4300-6700-2200 44604300 Standard Weight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.300 6.700 2.200

4-460-4500-6700-220-2 44604500-2 Pro Series Lightweight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.500 6.700 2.200

4-460-4500-6700-220-3 44604500-3 Superlight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.500 6.700 2.200

4-460-4500-6700-2200 44604500 Standard Weight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.500 6.700 2.200

4-460-4750-6700-220-2 44604750-2 Pro Series Lightweight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.750 6.700 2.200

4-460-4750-6700-220-3 44604750-3 Superlight Ford 460 Big Block Forged 4340 Steel 2-Piece Int Bal, May Req Heavy Metal 4.750 6.700 2.200

4-8.1-4375-6700-2200 481029 Standard Weight Chevy 8.1L Big Block Forged 4340 Steel 1-Piece Internal Balance 4.375 6.700 2.200

4-FE-4125-6700-2200 4FE100 Standard Weight Ford FE Big Block Forged 4340 Steel 2-Piece Internal Balance 4.125 6.700 2.200

4-FE-4250-6700-2200 4FE200 Standard Weight Ford FE Big Block Forged 4340 Steel 2-Piece Internal Balance 4.250 6.700 2.200

4-HEMI-3795-6125 4HEMI37910 Standard Weight Chrysler 392 Hemi Modern Hemi Forged 4340 Steel 1-Piece Pilot ID 1.090" 3.795 6.125 2.100

4-HEMI-3900-6125-20 4HEMI39010-20 Standard Weight Chrysler 426 Hemi Modern Hemi Forged 4340 Steel 1-Piece Pilot ID 1.090" 3.900 6.125 2.000

4-HEMI-4050-6125-20 4HEMI40510-20 Standard Weight Chrysler 426 Hemi Modern Hemi Forged 4340 Steel 1-Piece Pilot ID 1.090" 4.050 6.125 2.000

4-HONDA-89MM-1771 4H891 Standard Weight Honda 89mm Sport Compact Forged 4340 Steel 1-Piece 1.771/45mm Pin Dia, .935/24mm Rod Wid 3.504 1.771 0.935

4-HONDA-89MM-1771-2 4H891-2 Pro Series Lightweight Honda 89mm Sport Compact Forged 4340 Steel 1-Piece 1.771/45mm Pin Dia, .935/24mm Rod Wid 3.504 1.771 0.935

4-HONDA-92MM-1771 4H921 Standard Weight Honda 92mm Sport Compact Forged 4340 Steel 1-Piece 1.771/45mm Pin Dia, .935/24mm Rod Wid 3.622 1.771 0.935

4-HONDA-92MM-1771-2 4H921-2 Pro Series Lightweight Honda 92mm Sport Compact Forged 4340 Steel 1-Piece 1.771/45mm Pin Dia, .935/24mm Rod Wid 3.622 1.771 0.935

4-HONDA-97MM-1771-2 4H971-2 Pro Series Lightweight Honda 97mm Sport Compact Forged 4340 Steel 1-Piece 1.771/45mm Pin Dia, .935/24mm Rod Wid 3.819 1.771 0.935

4-LS1-3622-6125-24 4LS136262 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 3.622 6.125 2.100

4-LS1-3622-6125-58 4LS136365 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 3.622 6.125 2.100

4-LS1-4000-6125-24 4LS140062 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LS1-4000-6125-24-S 4LS140062-S Pro Street Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LS1-4000-6125-58 4LS140065 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LS1-4000-6125-58-S 4LS140065-S Pro Street Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LS1-4125-6000-24 4LS141282 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.125 6.000 2.100

4-LS1-4125-6000-58 4LS141285 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.125 6.000 2.100

4-LS1-4125-6125-24 4LS141262 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.125 6.125 2.100

4-LS1-4125-6125-58 4LS141265 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.125 6.125 2.100

4-LS1-4250-6125-24 4LS142562 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.250 6.125 2.100

4-LS1-4250-6125-58 4LS142565 Pro Stock Chevy LS1 LS1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.250 6.125 2.100

4-LS7-4000-6125-24 4LS740062 Pro Stock Chevy LS7 LS7 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LS7-4000-6125-58 4LS740065 Pro Stock Chevy LS7 LS7 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LS7-4125-6125-24 4LS741262 Pro Stock Chevy LS7 LS7 Small Block Forged 4340 Steel 1-Piece 24-Tooth Reluctor Wheel 4.125 6.125 2.100

4-LS7-4125-6125-58 4LS741265 Pro Stock Chevy LS7 LS7 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.125 6.125 2.100

4-LT1-4000-6125-58 4LT140065 Pro Stock Chevy LT1 LT1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LT1-4000-6125-58-DS 4LT140065DS Pro Stock Chevy LT1 LT1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.000 6.125 2.100

4-LT1-4125-6125-58 4LT141265 Pro Stock Chevy LT1 LT1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.125 6.125 2.100

4-LT1-4125-6125-58-DS 4LT141265DS Pro Stock Chevy LT1 LT1 Small Block Forged 4340 Steel 1-Piece 58-Tooth Reluctor Wheel 4.125 6.125 2.100

7-A-4250 Counterweight Ford Model A Replacement 1928-1931 Forged 4340 Steel 4.250 7.500 1.500

7-A-4250-C Counterweight Ford Model A/ Model T Counterweight Replacement 1928-1931 Forged 4340 Steel 4.250 7.500 1.500

7-A-4250-C-H Counterweight Ford Model A/ Model T Counterweight Replacement 1928-1931 Forged 4340 Steel 4.250 7.500 1.500

7-A-4250-H Counterweight Ford Model A Replacement 1928-1931 Forged 4340 Steel 4.250 7.500 1.500

7-A-4250-S Counterweight Ford Model A Replacement 1928-1931 Forged 4340 Steel 4.250 7.500 1.500

7-B-4250 Counterweight Ford Model B/C 1932-1934 Forged 4340 Steel 4.250 7.500 1.500

7-B-4250-H Counterweight Ford Model B/C 1932-1934 Forged 4340 Steel 4.250 7.500 1.500

7-T-4000 Counterweight Ford Model T Replacemet 1908-1927 Forged 4340 Steel 4.000 7.000 1.250

7-T-4000-H Counterweight Ford Model T Replacemet 1908-1927 Forged 4340 Steel 4.000 7.000 1.250

7-T-4250-1590 Counterweight Ford Model T Stroker, 4.250" Stroker Forged 4340 Steel 4.250 6.875 1.500

7-T-4250-1590-H Counterweight Ford Model T Stroker, 4.250" Stroker Forged 4340 Steel 4.250 6.875 1.500

7-T-4250-1625 Counterweight Ford Model T Stroker, 4.250" Stroker Forged 4340 Steel 4.250 6.875 1.500

7-T-4250-1625-H Counterweight Ford Model T Stroker, 4.250" Stroker Forged 4340 Steel 4.250 6.875 1.500

77-350-3500-570-2 773502021 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.100

77-350-3500-570-2-18 773502018 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 1.888

77-350-3500-570-2-20 773502020 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.500 5.700 2.000

77-350-3750-600-2 773505621 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

77-350-3750-600-2-20 773505620 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.000

77-350-3800-585-2-18 773505418 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 5.850 1.888

77-350-3800-585-2-20 773505420 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 5.850 2.000

77-350-3875-600-2 773507621 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

77-350-3875-600-2-20 773507620 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.000

77-350-4000-600-2 773508621 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

77-350-4000-600-2-20 773508620 Pro Series Big Block Post Chevy 350 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.000

77-400-3750-600-2 774005621 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.750 6.000 2.100

77-400-3800-585-2-18 774005418 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 5.850 1.888

77-400-3800-585-2-20 774005420 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.800 5.850 2.000

77-400-3875-600-2 774007621 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.100

77-400-3875-600-2-20 774007620 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 3.875 6.000 2.000

77-400-4000-600-2 774008621 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.100

77-400-4000-6000-2-20 774008620 Pro Series Big Block Post Chevy 400 Small Block Forged 4340 Steel 2-Piece Internal Balance 4.000 6.000 2.000

88-308-3750-5850 8830810 Billet Lightweight Holden 308 Small Block Forged 4340 Steel 2-Piece 3.750 5.580 2.000

88-308-4000-5850 8830820 Billet Lightweight Holden 308 Small Block Forged 4340 Steel 2-Piece 4.000 5.580 2.000

88-455O-4250-6800-2200 88455042 Billet Lightweight Oldsmobile 455 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.250 6.800 2.200

88-455O-4500-6800-2200 88455045 Billet Lightweight Oldsmobile 455 Big Block Forged 4340 Steel 2-Piece Internal Balance 4.500 6.800 2.200

88-HONDA-95MM-1771-2 88H951-2 Billet Lightweight Honda 95mm Sport Compact Forged 4340 Steel 1-Piece 1.771/45mm Pin Dia, .935/24mm Rod Wid 3.740

88-MITSU-100MM-1771 88M101 Billet Lightweight Mitsubishi 100mm 4G63/4G64 Forged 4340 Steel 1-Piece 7-Bolt Flange 3.937

88-MITSU-94MM-1771 88M941 Billet Lightweight Mitsubishi 94mm 4G63/4G64 Forged 4340 Steel 1-Piece 7-Bolt Flange 3.700

88-SUBARU-79MM-2047 88S791 Billet Lightweight Subaru 79mm EJ20/EJ25 Forged 4340 Steel 1-Piece 3.110

88-SUBARU-83MM-2047 88S831 Billet Lightweight Subaru 83mm EJ20/EJ25 Forged 4340 Steel 1-Piece 3.268

9-10243070 9102430 Pro Stock Chevy 350 Small Block Cast Steel 1-Piece Internal Front, External Rear Balance 3.480 5.700 2.100

9-103750 9103750 Pro Stock Chevy 350 Small Block Cast Steel 2-Piece External Balance 3.750 5.700 2.100

9-103750L 9103750L Pro Stock Chevy 350 Small Block Cast Steel 1-Piece Internal Front, External Rear Balance 3.750 5.700 2.100

9-104000 910400 Pro Stock Chevy 400 Small Block Cast Steel 2-Piece External Balance, Not Stock Rod Length 3.750 5.700 2.100

9-10442 910442 Pro Stock Chevy 350 Small Block Cast Steel 2-Piece Internal Balance 3.480 5.700 2.100

9-10454 910454 Pro Stock Chevy 454 Small Block Cast Steel 2-Piece External Balance 4.000 6.135 2.200

9-10454L 910454L Pro Stock Chevy 454 Small Block Cast Steel 1-Piece External Balance 4.000 6.135 2.200

9-10526 910526 Pro Stock Chevy 350 Small Block Cast Steel 1-Piece Internal Front, External Rear Balance 3.480 5.700 2.100

9-221-4000-2000 922142 Series 9000 Ford 221 Flathead Cast Steel 2-Piece Internal Balance 4.000 7.000 2.000

9-239-4000-2000 923910 Series 9000 Ford 239 Flathead Cast Steel 2-Piece Internal Balance 4.000 7.000 2.000

9-239-4000-2138 923911 Series 9000 Ford 239 Flathead Cast Steel 2-Piece Internal Balance 4.000 7.000 2.138

9-239-4125-2000 923920 Series 9000 Ford 239 Flathead Cast Steel 2-Piece Internal Balance 4.125 7.000 2.000

9-239-4125-2138 923921 Series 9000 Ford 239 Flathead Cast Steel 2-Piece Internal Balance 4.125 7.000 2.138

9-239-4250-2000 923930 Series 9000 Ford 239 Flathead Cast Steel 2-Piece Internal Balance 4.250 7.000 2.000

9-239-4375-2000 923940 Series 9000 Ford 239 Flathead Cast Steel 2-Piece Internal Balance 4.375 7.000 2.000

9-302-3250-5400-2123 93022 Series 9000 Ford 302 Small Block Cast Steel 1-Piece, 2-Piece External 28 oz. Balancer 3.250 5.400 2.123

9-302-3400-5400-2123 93023 Series 9000 Ford 302 Small Block Cast Steel 1-Piece, 2-Piece External 28 oz. Balancer 3.400 5.400 2.123

9-308-3480-5627 930810 Series 9000 Holden 308 Small Block Cast Steel 2-Piece Internal Balance 3.480 5.627 2.124

9-308-3480-5700 930820 Series 9000 Holden 308 Small Block Cast Steel 2-Piece Internal Balance 3.480 5.700 2.100

9-340-3580-6123 934010 Series 9000 Chrysler 340 Small Block Cast Steel 2-Piece Internal Balance, May Require Mallory 3.580 6.123 2.125

9-340-4000-6123 934020 Series 9000 Chrysler 340 Small Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.000 6.123 2.125

9-350-3480-5700 935010 Series 9000 Chevy 350 Small Block Cast Steel 2-Piece Internal Balance 3.480 5.700 2.100

9-350-3750-5700 935050 Series 9000 Chevy 350 Small Block Cast Steel 2-Piece External Balance 3.750 5.700 2.100

9-350-3750-5700-I 935050-I Series 9000 Chevy 350 Small Block Cast Steel 2-Piece Internal Balance 3.750 5.700 2.100

9-350-3750-5700-L 935050L Series 9000 Chevy 350 Small Block Cast Steel 1-Piece Internal Front, External Rear Balance 3.750 5.700 2.100

9-350-3750-5700-L-I 935050L-I Series 9000 Chevy 350 Small Block Cast Steel 1-Piece Internal Balance 3.750 5.700 2.100

9-350-3750-6000 935056 Series 9000 Chevy 350 Small Block Cast Steel 2-Piece Internal Balance 3.750 6.000 2.100

9-350-3750-6000-L 935060L Series 9000 Chevy 350 Small Block Cast Steel 1-Piece Internal Balance 3.750 6.000 2.100

9-351-3500-5955-2311 9351W05 Pro Stock Ford 351 Small Block Windsor Cast Steel 1-Piece, 2-Piece External 28 oz. Balancer 3.500 5.955 2.311

9-351-385-5955-2100C 9351C30 Series 9000 Ford 351 Small Block Cleveland Cast Steel 2-Piece External 28 oz. Balancer 3.850 5.955 2.100

9-351-385-5955-2311W 9351W10 Series 9000 Ford 351 Small Block Windsor Cast Steel 1-Piece, 2-Piece External 28 oz. Balancer 3.850 5.955 2.311

9-351-385-6200-2100W 9351W12 Series 9000 Ford 351 Small Block Windsor Cast Steel 1-Piece, 2-Piece Internal Balance, May Require Mallory 3.850 6.200 2.100

9-351-400-6000-2100C 9351C46 Series 9000 Ford 351 Small Block Cleveland Cast Steel 2-Piece External 28 oz. Balancer 4.000 6.000 2.100

9-351-400-6000-2100W 9351W46 Series 9000 Ford 351 Small Block Windsor Cast Steel 1-Piece, 2-Piece External 28 oz. Balancer 4.000 6.000 2.100

9-351-400-6200-2100W 9351W48 Series 9000 Ford 351 Small Block Windsor Cast Steel 1-Piece, 2-Piece Internal Balance, May Require Mallory 4.000 6.200 2.100

9-360-3580-6123 936010 Pro Stock Chrysler 360 Small Block Cast Steel 2-Piece Internal Balance, May Require Mallory 3.580 6.123 2.125

9-360-4000-6123 936020 Series 9000 Chrysler 360 Small Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.000 6.123 2.125

9-4.2L-3740-6090 942L3740 Pro Stock Ford 4.2L V6 Cast Steel 1-Piece Not Balanced 3.740 6.090 2.310

9-4.2L-3895 942010 Pro Stock Chrysler 4.2L Jeep Cast Steel 2-Piece Neutral Balanced 3.895 5.850 2.095

9-400-3500-6000 940020 Series 9000 Chevy 400 Small Block Cast Steel 2-Piece Internal Balance 3.500 6.000 2.100

9-400-3750-5700 940050 Series 9000 Chevy 400 Small Block Cast Steel 2-Piece External Balance 3.750 5.700 2.100

9-400-3750-6000 940056 Series 9000 Chevy 400 Small Block Cast Steel 2-Piece Internal Balance 3.750 6.000 2.100

9-428-3980-6490-2438 942810 Pro Stock Ford 428 Big Block Cast Steel 2-Piece Internal Balance, May Require Mallory 3.980 6.490 2.438

9-454-4250-6135 945420 Series 9000 Chevy 454 Big Block Cast Steel 2-Piece External Balance 4.250 6.135 2.200

9-454-4250-6135-L 945420L Series 9000 Chevy 454 Big Block Cast Steel 1-Piece External Balance 4.250 6.135 2.200

9-454-4250-6385 945425 Series 9000 Chevy 454 Big Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.250 6.385 2.200

9-454-4250-6385-L 945425L Series 9000 Chevy 454 Big Block Cast Steel 1-Piece Internal Balance, May Require Mallory 4.250 6.385 2.200

9-460-3850-6635-2500 946010 Pro Stock Ford 460 Big Block Cast Steel 2-Piece Not Balanced 3.850 6.605 2.500

9-460-4150-6700-2200 946041 Series 9000 Ford 460 Big Block Cast Steel 2-Piece Internal Balance 4.150 6.700 2.200

9-460-4300-6700-2200 946043 Series 9000 Ford 460 Big Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.300 6.700 2.200

9-460-4500-6700-2200 946045 Series 9000 Ford 460 Big Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.500 6.700 2.200

9-6.5L-3819-6280 965L3819 Pro Stock GMC 6.5L Diesel Cast Steel 1-Piece Stock Replacement 3.819 6.280 2.399

9-FE-4125-6700-2200 9FE100 Series 9000 Ford 428 Big Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.125 6.700 2.200

9-FE-4250-6700-2200 9FE200 Series 9000 Ford 428 Big Block Cast Steel 2-Piece Internal Balance, May Require Mallory 4.250 6.700 2.200

Part # Short Part # Series Make Engine Type Material Rear Main Seal Balance Stroke Rod Length Rod Journal