Thread: young guy with a 429 and a budget!

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The problem will be building the motor to run on pump gas with the +/-72cc heads. Nobody makes an affordable dished piston any more to make a combination that will work.
With a 0.030" overbore, zero deck height, 9cc gasket and piston with a 30cc dish, you'd be at 9.6:1 static compression ratio and could run pump gas with the proper cam match.

See post 5 on this thread to get an idea of how the cam works with the static compression ratio. This is small block Chevy information, but it all works the same. Every motor out there is just an air pump. A certain cam will seem smaller to a larger displacement motor than it will to a smaller displacement motor, but in the end, they're all the same and will respond to the same hot rod tricks we've been doin' to 'em for over a hundred years.
http://www.clubhotrod.com/forums/sho...threadid=41633