WTF are you talking about willis? Please show me a 5.7L vette with no power adder running 140mph traps.
Then show me that car running around sebring.
Then maybe you will have something on that car. Till then, I don't think so.
EDIT: closest thing I can find is a 427 on slicks with a 135 shot running 9.9@144mph...far from stock displacement and far from all motor