Just wanted to say thanks to Richard for CNCing my LS6 Heads to 77cc. By using a .065 Cometic Gasket and the newly revamped LS6 Heads my CR will be below 8.97:1. My CR was 9.67:1 and when combined with 12-13lbs of boost could only run 10* of timing at WOT with 91 octane. Should be able to add around 20+* of timing now.

 

If you don`t mind me asking. Generaly how much does a shop charge to open up the chambers on a set of heads? Thanks and Congrats.

 

You know I haven't had to pay yet. Maybe Richard will chime in. I don't think its too expensive though. If one was just interested in lowering Compression no other work would really have to be done other than opening up the chambers.

 

Sounds great, let us know how much it cost.