2001BadSS

Im thinking about buying a set of stock ls6 heads from a friend of mine. How much of a gain would i get just by bolting those on?

2001BadSS

also what are the intake runner sizes on a stock Ls6 head?

KCFormula

iTrader: (4)

This should be in LS1/LS6 performance, but in my opinion the LS6 head swap is not enough to be worth all the money and work of the swap. By the time you buy new gaskets, headbolts and fluids its not worth the 20hp. If you had them ported then it would be worth it but until then I'd say save up to get them ported.