Description
Race smart with Magnum durable competition crankshafts from Callies. Manufactured from ultra-pure AISI 4340 steel, these cranks are subjected to multiple heat treatments, giving them unsurpassed wear and strength characteristics. With their gun-drilled mains and fully profiled counterweights, you may choose from an available selection for a variety of engine types. You just can’t beat the proven reliability and value of Callies Magnum crankshafts.
| Specification | Detail |
|---|---|
| Engine | Big Block Chevy |
| Material | Forged 4340 Steel |
| Rear Main Seal | 2-Piece |
| Balance | Internal |
| Stroke | 4.375" |
| Main Journal | 2.750" |
| Rod Journal | 2.200" |
| Balancer Bolt Thread Size | 1/2-20 in. |
Features:
- High-purity premium 4340 forging
- All rod journals are drilled with generously radiused lightening holes
- Counterweights positioned to reduce imbalance forces across the entire shaft
- Each counterweight features Callies Dual Arc windage-reducing profile
- Heat Treatment: Perma Case deep nitride
Details
Shipping Information
- H12.00"
