Lightweight, durable crankshafts are made from ultra-pure AISI 4340 forged steel. Crankshafts feature gun-drilled mains, fully profiled counterweights, and have under-gone exclusive Ultra-Case heat treatment. Available for a variety of small block and big block Chevy engines.
Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
- Rear Main Seal Style:
- 2-piece
- Engine Stroke (in.):
- 4.500 in.
- Material:
- Forged 4340 steel
- Engine Balance:
- Internal
- Lightened:
- Yes
- Requires Narrow Bearings:
- Yes
- Rod Journal Diameter (in.):
- 2.200 in.
- Main Journal Diameter (in.):
- 2.750 in.
- Rod Length:
- 6.700 in.
- Crankshaft Snout Style:
- Standard
- Balancer Bolt Thread Size:
- 1/2-20 in.
- Weight:
- 69 lbs.
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 7.4L/454
- Years:
- 1970-1990
