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When Rick Ehrenberg was asked this question, he responded with something like....How high? exactly ONE rpm less than it takes to blow it up.


That is my best guess with a question like this,why waste time guessing?



Seems like he got alot of feedback with that question. RPM = good balance, light rotating assy. good roller cam, good springs,put a brick on gas pedal see how high it will go for how long. Stock untouched heads are only good to 5,500 to 6,000,so many combos to make them better. Where do you want to go and how much money ya gots. And the big question.. WHY.