Molnar Big Block Chev 4340 Forged Crank -4.000" Stroke

Description

Our 4340 forged crankshafts are heat treated to increase tensile strength, shot peened to increase fatigue life, nitrided for wear resistance and 100% mag particle inspected to ensure against cracks.
Sizes are held to the tightest tolerances you’ll find in the racing industry!
CHEVY BIG BLOCK FORGED CRANKS
Part Number
Description
Stroke
Main
Rod Pin Diameter
Minimum Rod Length
Bob Weight
454-4000DC6F-6135
Big Block Chevy
4.000
454
2.200
6.135
2150
454-4000DC6F-OPS-6135
Big Block Chevy w/ One Piece Rear Seal
4.000
454
2.200
6.135
2150
454-4250DC6F-6135
Big Block Chevy
4.250
454
2.200
6.135
2150
454-4250DC6F-6385
Big Block Chevy
4.250
454
2.200
6.385
2150
454-4250DC6F-OPS-6385
Big Block Chevy w/ One Piece Rear Seal
4.250
454
2.200
6.385
2150
454-4250DC8F-6385
Big Block Chevy w/ 8 Counterweights
4.250
454
2.200
6.385
2150
454-4375DC8F-6385
Big Block Chevy w/ 8 Counterweights
4.375
454
2.200
6.385
2150
454-4500DC6F-6535
Big Block Chevy
4.500
454
2.200
6.535
2300
454-4500DC8F-6535
Big Block Chevy w/ 8 Counterweights
4.500
454
2.200
6.535
2300
454-4750DC8F
Big Block Chevy w/ 8 Counterweights
4.750
454
2.200
6.635
2300