Callies Magnum Forged Crankshaft FORD GODZILLA 7.3L
Callies has stepped up to the plate and brought a US-made, fully counterweighted, forged crank to market for the venerable 7.3” Ford Godzilla platform. Machined from an ultra-high quality 4340 forging, the Magnum crankshaft for the Godzilla is able to take on virtually any task; from stock replacement and hot rods to ultra high output drag racing.
Ford Godzilla Magnum Average Weight for 4.500” Stroke, Unbalanced: 58 lb. Available Options • Stroke range of 3.000” to 4.600” • Crafted from Callies’ premium 4340 forging • Fully counterweighted • Several rod journal sizes available • Rod throws lightened • Gun drilled mains
Custom Configurations are available.
***Due to the Custom Nature and Options Available - All Crankshafts are Made to Order***
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 SAE 4340 steel. Callies subjects this material to multiple heat treatments, resulting in a crankshaft with unsurpassed wear and strength characteristics.
All Magnum cranks feature Callies Ultra-Case heat treatment.
Each Magnum crank will have gun drilled mains and fully profiled counterweights, regardless of engine type. A typical 4.000” 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.
Many crankshafts are counterweighted to offset simple balance forces detected at
main bearings 1 and 5 by today’s precision balancers. Callies Magnum Mass Correct
counterweights have been strategically placed to reduce imbalance forces over the entire length of the shaft. The result is a crankshaft exhibiting superior bearing life and minimal wear.
Material distribution over the rod journal arms and critical strength generating regions of Magnum crankshafts has been enhanced as well. These slight design changes improve the strength to weight ratio, ensuring each Magnum crankshaft will have an
extended fatigue resistant life.
