I drive my N/A with full bolt on and the 4.08 gear hard every day and have gone at least 75 times the 1/4 mile, and i shift at 7700 rpm.
It does not burn any oil.
break them in hard and lean them out and they run great.
Can not wait for stage 2 SC from GTM.
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 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.
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