PRC stg 2.5 5.3l heads to PRC l92 head quesitons..
01-05-2010, 01:03 AM
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PRC stg 2.5 5.3l heads to PRC l92 head quesitons.. I was thinkin about changing my setup on my car from the ms4 and stg 2.5 5.3l heads to some prc l92's and a custom grind cam.. the car is 11.75:1 scr right now, what do you think there is to gain?? its a 375ci lq4.. Thanks!!
01-06-2010, 05:31 AM
#3
Only problem I can see is compression. You're going from what, 59cc I'm assuming to 72cc (unmilled) L92's? You'll need a large split duration cam as well, and your compression will affect how large of a cam you can run with it to have your DCR decent.
01-06-2010, 05:40 AM
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the prc 2.5 5.3l heads are more like a 63cc chamber i think after they do the cnc on the combustion chamber, you can get the l92's in a 67cc so i would be gaining 4cc's. Its 11.75:1 right now, so if it goes down to a 11.25:1 then thats fine or even 11:1. I think the heads would make up for the compression lost. I would prolly get with Pat G with a cam that would compliment everything else done to the motor/car. This is a street fun/strip car not a DD
