Crankshaft ID

Small block Chevy Crank Shaft castings numbers
Casting # Engine Forged/Cast Journal Stroke of crank Rear main seal
1130 327 Forged crank Medium journal 3.25" Stroke 2 Piece rear main seal
1178 302 Forged crank Medium journal 3.25" Stroke 2 Piece rear main seal
1181 305/350 Cast crank Medium journal 3.48" Stroke 2 Piece rear main seal
1182 350 Forged crank Medium journal 3.48" Stroke 2 Piece rear main seal
2680 327 Forged crank Small journal 3.25" Stroke 2 Piece rear main seal
2690 350 Forged crank Medium journal 3.48" Stroke 2 Piece rear main seal
3279 302 Forged crank Medium journal 3.00" Stroke 2 Piece rear main seal
4577 327 Forged crank Small journal 3.25" Stroke 2 Piece rear main seal
4672 327 Forged crank Medium journal 3.25" Stroke 2 Piece rear main seal
310514 350 Cast crank Medium journal 3.48" Stroke 2 Piece rear main seal
330550 350 Cast crank Medium journal 3.48" Stroke 2 Piece rear main seal
354431 262 Cast crank Medium journal 3.00" Stroke 2 Piece rear main seal
3727449 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3729449 265 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3734627 327 Forged crank Small journal 3.25" Stroke 2 Piece rear main seal
3735236 265/327 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3735263 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3782680 327 Forged crank Small journal 3.25" Stroke 2 Piece rear main seal
3814671 327 Forged crank Small journal 3.25" Stroke 2 Piece rear main seal
3815822 265/283/302 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3835236 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3836266 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3848847 283 Forged&Cast Small journal 3.00" Stroke 2 Piece rear main seal
3849847 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3876764 283 Forged&Cast Small journal 3.00" Stroke 2 Piece rear main seal
3876768 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3884577 327 Forged crank Small journal 3.25" Stroke 2 Piece rear main seal
3892690 350 Forged crank Medium journal 3.48" Stroke 2 Piece rear main seal
3911001 307/327 Cast crank Medium journal 3.25" Stroke 2 Piece rear main seal
3911011 307/327 Cast crank Medium journal 3.25" Stroke 2 Piece rear main seal
3914672 327 Forged crank Medium journal 3.25" Stroke 2 Piece rear main seal
3923279 302 Forged crank Medium journal 3.00" Stroke 2 Piece rear main seal
3932442 267/305/350 Cast crank Medium journal 3.48" Stroke 2 Piece rear main seal
3941174 307/327 Cast crank Medium journal 3.25" Stroke 2 Piece rear main seal
3941178 302 Forged crank Medium journal 3.00" Stroke 2 Piece rear main seal
3941182 350 Forged crank Medium journal 3.48" Stroke 2 Piece rear main seal
3941188 350 Forged crank Medium journal 3.48" Stroke 2 Piece rear main seal
3949847 283 Forged crank Small journal 3.00" Stroke 2 Piece rear main seal
3951130 327 Forged crank Medium journal 3.25" Stroke 2 Piece rear main seal
3951529 400 Cast crank Large journal 3.75" stroke 2 Piece rear main seal
14088526 305/350 Cast crank Medium journal 3.48" Stroke 1 piece rear main seal
14088532 350 Forged crank Medium journal 3.48" Stroke 1 piece rear main seal
14088535 305/350 Cast crank Medium journal 3.48" Stroke 1 piece rear main seal
14088552 350 Forged crank Medium journal 3.48" Stroke 1 piece rear main seal
10106122 350 Forged crank Large journal 2.76" 3.66" Stroke 1 piece rear main seal