I'm getting GTP stage 2 heads/ Thunder Racing 224 112 LSA cam tomorrow <img src="graemlins/gr_hail.gif" border="0" alt="[hail]" /> . My car is an M6. I was thinking about going with 11:1 ratio. Is this too high? Will I have a problem with pre-detonation?

 

you should be fine. shaved .030 it comes out to about 10.8:1
shold have a nice pop to it.

steve frank

 

[quote]Originally posted by MuscleCar:
<strong>I'm getting GTP stage 2 heads/ Thunder Racing 224 112 LSA cam tomorrow <img src="graemlins/gr_hail.gif" border="0" alt="[hail]" /> . My car is an M6. I was thinking about going with 11:1 ratio. Is this too high? Will I have a problem with pre-detonation?</strong><hr></blockquote>You will be fine just dont ever use racetrac gass like someone I knew with that compression he he he he.