nolarob Posted April 1, 2009 Report Share Posted April 1, 2009 I have a set of heads from previous build that included stock lq4 heads milled .40, ported and polished, and 3 angle valve job. I want to use these heads on my 2006 Denali with LQ9 but I'm unsure of compression ratio. Will I be safe on pump fuel still with the increased compression from lq4 to lq9? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.