Heads question

From everything I've read the J heads do flow as well as the X heads. The only restriction is the smaller valves and your high compression. That will restrict high end power quite a bit. I'd still agree with everyone also on using the J heads but if your looking for maximum HP install large valves in them.

The one major thing I can't agree with is the difference in compression ratio when switching heads because X and J heads both have basically the same size combustion chambers when stock, give or take a couple of CC's. Unless your J heads have been ground out to a higher CC or something and it would take a BUNCH of grinding to drop 1.5 points of compression.

BTW: If you decide to not use those X heads shoot me a PM. A buddy of mine is looking for a set.