Ford Big Block Crankshaft

A modified heat treat cycle developed at Callies Heat Treat Department for the Ford Big Block 460 crankshaft produces an optimal microstructure and delivers a  significant improvement in mechanical properties.

The Callies Modified Heat Treat Cycle delivered a noticeable improvement over the as received condition AND exceeds the minimum AISI requirements.

•The as received microstructure did not meet Callies standards.
•The microstructure was improved with a modified heat treat cycle devised by Callies in-house heat treat department.
•The modified heat treat cycle delivered both improved mechanical properties and optimum fatigue resistance.
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