Callies Magnum 4340 Forged 3.8750 396 SBC Crankshaft
- 3.875 Stroke (400 main 396 SBC)
- 6.00" Minimum Rod Length, 2.1 pin
- ANSI Certified 4340 Non-Twist Forged Material
- All 4 Rod Journals include lightning holes
- Gun Drilled Mains
- Perma-Tough Heat Treat
- This is Callies top of the line crankshaft!
After years of service, Magnum crankshafts by Callies have established themselves as one of the most durable competition crankshafts ever produced. Magnum crankshafts are manufactured from ultra pure AISI 4340 steel. Callies then subjects this material to multiple heat treatments including our proven Perma-Tough process. This procedure results in a hard layer that is substantial. Perma-Tough treated cranks will never need to be heat treated again even after a -.060 in. regrind.
All Magnum cranks will have gun drilled mains and fully profiled counterweights, regardless of engine type. A typical 4.000 inch stroke Small Block Chevy will weigh less than 48 pounds.
Magnum crankshafts are available for a variety of engine types and can be manufactured to your specific configuration.
This product was added to our catalog on Wednesday 06 December, 2006.
