The Compstar Comet is your answer to lightweight crankshaft needs for Small Block Chevy engines. Produced from 4340 forged steel that is triple heat-treated and nitrided, Compstar Comets are ready for long term, trouble free use.
Each Comet features gun drilled mains, lightened rods, pendulum cut counterweights, and a star flange. All journals are polished to 5Ra or finer and match sized to within .0003 inch or less throughout the entire crankshaft. Comets are produced with .125 journal radii and require performance grade bearing inserts. Currently, Comets are only available with 350 mains.
- Rear Main Seal Style:
- 2-piece
- Engine Stroke (in.):
- 3.750 in.
- Crankshaft Material:
- Forged 4340 steel
- Engine Balance:
- Internal
- Lightened:
- Yes
- Requires Narrow Bearings:
- Yes
- Rod Bearings Included:
- No
- Main Bearings Included:
- No
- Rod Journal Diameter (in.):
- 2.100 in.
- Main Journal Diameter (in.):
- 2.448 in.
- Crankshaft Snout Style:
- Standard
- Balancer Bolt Thread Size:
- Custom
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen I
- Engine Sizes:
- 5.7L/350
- Years:
- 1967-1986
- Crankshaft to Flywheel Attachment:
- 6-bolt
