Hi Robert, I'm still waiting for a call back from Tatum but in the mean time ran across this with concerns.
Guy posted selling his GT-K 650's with .86ar's on a turbo built LSX 434 motor due to the turbos ran out of gas at 20psi at 4800rpm on this street driven 2007 corvette....
With that being said, I'm feeling a little nervous! Here we are hooking up 38" paddle tires in the sand with a car weight of 2700# and I run this motor to 7200rpm.
The guy is changing to ur 76 series size...
Any thought or concerns but hopefully u can see my questions before I buy.....
Bill
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