Gun-drilled main line holes and profiled, pendulum-cut coun-terweights result in extremely lightweight (40-42 lbs.) F43 crankshafts. Durability is achieved through nitride hardening and straight shot, chamfered oil holes. All small block Chevy crank-shafts listed are internally balanced and use two-piece rear main seals.
- Rear Main Seal Style:
- 2-piece
- Engine Stroke (in.):
- 3.480 in.
- Material:
- Forged 4340 steel
- Engine Balance:
- Internal
- Lightened:
- Yes
- Requires Narrow Bearings:
- Yes
- Rod Journal Diameter (in.):
- 2.000 in.
- Main Journal Diameter (in.):
- 2.448 in.
- Rod Length:
- 5.700 in.
- Crankshaft Snout Style:
- Standard
- Balancer Bolt Thread Size:
- 7/16-20 in.
- Weight:
- 45 lbs.
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen I
