Proven High Strength Reliability
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.
Small Block Chevy
* Stroke Range of 2.600 in. to 4.300 in.
* 2.100 - 2.000 - 1.888 Rod Journal Diameters
* 400 - 350 - 283 Main Bearing Diameters
* BBC Post or SBC Post
* 4 Bolt Sprint or Star Flange
* One or Two Piece Type Rear Seal Flange
LS1 Gen III - IV
* Stroke Range of 3.000 in. to 4.125 in.
* 2.100 - 2.000 - 1.888 Rod Journal Diameters
* With or Without Timing Wheel & Hub
* Multiple Post Keyways
340 Mopar
* Stroke Range of 3.000 to 4.125
* 2.100 - 2.000 - 1.888 Rod Journal Diameters
* Multiple Post Keyway and Bolt Configurations
* 4 Bolt Sprint or Star Flange
440 and Hemi Mopar Magnum
* Stroke range of 3.750 in. to 5.000 in.
* 2.375 - 2.200 Rod Journal Diameters in either Mopar or Chevy Width
* Multiple Post Keyway and Bolt Configurations
* Standard 8 Bolt Flange
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