Stroke old 340 or new crate engine

Darter6 said

If it were me I would use your own 340.As long as you have a good machine shop in your area.

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This...You don't need a supercharger to make 500 horsepower... Here is a better question(s): What is your plans for drivability, pump gas (?), and is really 500 horsepower, a goal?