DevilYellow said:I had posted this on another thread, this gives the details of the heads. LQ9=6.0L They will all bolt on, the 6.0 is designed just like the LS6 heads, but with a larger chamber. 5.3 heads have a much smaller chamber. You can play around with different heads to obtain a different compression ratio.
6.0 Heads(71.06cc) are just like LS6 heads(64.45cc) but with a larger cc combustion chamber. The 5.3's (61.15cc) have a smaller cc combusion chamber. LS1 5.7 heads are 66.67cc. On a stock short block you can control the static CR by changing around the heads. Be carefull, some head gaskets have a shorter installed height....means a tiny bit more comp.
The new AFR heads are available from 64-76 cc chambers.