To use a 602 in a sprint car you need more than just having the cam drilled. Because the 602 is externally balanced you need a combo balancer/drive hub and a different yoke. Pace Performance in Ohio can and does drill the cam while it is in the engine. They also have developed the drive hub and a neat carb spacer/ throttle linkage plate.
They can provide a complete turn key engine which they do for the new DIRTcar Pro Sprint program.
Just call them at 888-748-4655 and ask for Don Blackshear.
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