Callies Magnum Crankshafts
Features
- High purity premium 4340 forging
- All rod journals are drilled with generously radiused lightening holes
- Counterweights have been placed to reduce imbalance forces over the entire shaft
- Each counterweight features Callies (Dual Arc) windage redcing edge
- Perma Case Deep Nitride
- Rear Main Seal Style:
- 2-piece
- Engine Stroke (in.):
- 4.375 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.):
- 2.200 in.
- Main Journal Diameter (in.):
- 2.750 in.
- Balancer Bolt Thread Size:
- 1/2-20 in.
- Crankshaft Snout Style:
- Standard
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 7.4L/454
- Years:
- 1970-1990
- Crankshaft to Flywheel Attachment:
- 6-bolt
