Finally the RapTr cam goes in tomorrow. I will get a clip and numbers
11-15-2010, 04:53 PM
#23
I don't really know to be honest. My Patriots were 64cc chambers and I used the thinner Cometics first round. I think that should have been a real 10.75:1. Now I'm milled .010" using GM MLS but I also have those .080" notches in the pistons. Maybe 10.5?
Doing the rough math I have you around 10.8:1 which makes those numbers even more impressive through a 9" and auto trans!! Glad you are able to enjoy the car. 
12-27-2010, 12:05 AM
#28
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** Note to anyone buying at least in this case... Patriots... check them before bolting on! All my problems could have been avoided with a check or a small cut from jump. I have never bought new heads before but figured just remove them from their boxes and bolt them on. This could be an isolated incident but I will never again!!! **
** Note to anyone buying at least in this case... Patriots... check them before bolting on! All my problems could have been avoided with a check or a small cut from jump. I have never bought new heads before but figured just remove them from their boxes and bolt them on. This could be an isolated incident but I will never again!!! **
could you please elaborate on this note? and the boldfaced as well.
thanks!
12-27-2010, 10:35 AM
#29
I installed the Patriots out of the boxes with Cometics. One leaked coolant as soon as we fired it up. I thought it was just a Cometic thing but eventually I lost the gasket that side. When the heads were checked the bad one was found to have runout.
