Drawing from the deep history of experience at Callies, our Compstar engineers have been able to combine the best characteristics of performance crankshaft design into the Compstar ?Compweight? for Big Block Chevy applications Produced from 4340 material that is triple heat treated and stress relieved during machining. Compstar BBC Compweights will remain true during severe duty use. All Compstar Compweights are center counterweighted for reduced bearing loads during high RPM use. Machined with .125 journal radii and conventional straight shot oiling, these cranks offer simple durability. With all 4 rod journals drilled, Compstar BBC Compweight cranks weigh in at 75lbs or less. Compweights are fully deep case nitrided.
Features
Center counterweighted for reduced bearing loads during high RPM use Machined with .125 in. journal radii Conventional straight shot oiling Full deep case nitrided
Features
- Rear Main Seal Style:
- 2-piece
- Engine Stroke (in.):
- 4.500 in.
- Crankshaft Material:
- Forged 4340 steel
- Engine Balance:
- Internal/External
- Lightened:
- No
- Requires Narrow Bearings:
- Yes
- Rod Bearings Included:
- No
- Main Bearings Included:
- No
- Rod Journal Diameter (in.):
- 2.200 in.
- Main Journal Diameter (in.):
- 2.750 in.
- Rod Length:
- N/A
- Crankshaft Snout Style:
- Large
- Balancer Bolt Thread Size:
- N/A
- Weight:
- N/A
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 7.4L/454
- Years:
- 1970-1990
