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There is a guy kicking ass in national Imca modified events changing carbs for the feature but not fuel ( stays on methanol) any ideas?? maybe just bigger carb is my guess to kill bottom end

IMCA just changed from 6400 rpm to 6800. What should I look at doing with my 45 race old crate? I have not changed valve springs but won the last two races we were in.

new motor,the gasket pushes out at the head right at the runner,usually the front runner.so air into the runner,then the rpms go way up and oils that plug...and we don't use lift plates any more

hey Brad,my last two 604 i have had problems blowing out intake gaskets,have you seen a rash in this lately?