I am planning on doing a N/A setup with a nice big cam with some nice old school lump. But should I stick with my heads when I have them port and polished or should I upgrade to ZO6 Heads or some type of other heads. What type of power gain will I see from changing to ZO6 port and polished over stock port and polished. How much are the ZO6 heads and what tyoe of power am I gonna get form the Stage 2 heads and cam setup. Thanks

 

Go check out www.LS1tech.com and do a search in the internal engine section. There's a pretty good thread on the merits of Ported LS1 vs Ported LS6 vs the cost value equation.

Good Luck

 

From what I've seen.. its not cheap to get ahold of LS6 cores, of course there's also the 6L truck head to consider. Still.. if all you want is 440-450rwhp, the LS1's will do that . If you want 460-500+rwhp.. it's time for a different casting.

-Phil