Manley Performance Chevy Big Block 4.750 Stroke Crankshaft

- Big Block Chevrolet Crankshafts

- 4340 Non-Twist Forgings Designed for Internal Balance

- 2 Piece Rear Seal

- Heat treated, stress relieved, shot peened, nitrided and 100% magnafluxed

- Micro polished large radius journals (narrowed rod bearings required)

454 MAIN JOURNAL DIAMETER WITH CENTER COUNTERWEIGHTS

- Stroke 4.750"

- Minimum Rod Length: 6.700"

- Main Journal Diameter: 2.750"

- Rod Journal Diameter: 2.200" 

- Bobweight (grams): 2425

- Total Weight (lbs.): 74-76