did i screw up? head/cam question
did i screw up? head/cam question i just picked up a head cam package from speed inc for a really good price. the kit consists of patriot heads 59cc stage 2. 2.02 1.57 valves. and speed incs si5 cam. 231/237 589/595. i have 06 gto with the ls2 in it. will this head/cam work well with my engine or should i sell it all? thanks guys
i just picked up a head cam package from speed inc for a really good price. the kit consists of patriot heads 59cc stage 2. 2.02 1.57 valves. and speed incs si5 cam. 231/237 589/595. i have 06 gto with the ls2 in it. will this head/cam work well with my engine or should i sell it all? thanks guys
My 99 SS had PP 59cc heads with (2.05/1.57) and a TSP 233/239/603/605/113 cam. Since Patriot welds the chambers and leaves the deck height stock, no problems at all. If they milled them for the bump in compression, you could have ptv issues but I am sure they still weld them up for 59cc. I ran 91-93 octane and even ended up putting a 100 shot on the car. Never had a problem. You'll love the throttle response.
Now personally, I had TEA port my LS2 heads (243's) @ 63cc and they ended up flowing 325/257 and only ran $1000 since I had the springs already. Flow chart attached. Do you have a flow chart on the current Patriots?
Last edited by JayplaySS; May 23, 2009 at 11:05 AM.
well with a compressed head gasket thickness of .06 and 59cc heads on an ls2 i got around 11.6 to 1 for compression. and thats assuming that the heads you purchased were for a 4in bore not 3.89
as for the camshaft, its always best to check ptv rather than guess.
as for the camshaft, its always best to check ptv rather than guess.
I would think that the head gasket of .060 would be killing your quench.
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