raising cranking compression
#1
raising cranking compression
i have a LS6 with a 234/238 custom spec cam in it (11* of overlap). New head gaskets and heads have been freshened up. warm cranking compression is around 140 psi across the board with no coolant or compression leaks. car is a dog unitll 3500 RPM's then its fucken awesome. I want to raise my compression so the car performs better at the bottom end. I would like to see my cranking compression around 170-180 psi. how much should i mill the heads to accomplish this? heads are 66cc 241 heads with stock thickness gaskets. I have enough PTV clearance to mill .020" without any issues. will this get me there? or should i mill .035" or so and fly cut pistons?
#6
12 Second Club
iTrader: (49)
now this is all off the top of my head math from inputting compression ratio calculations in all week at work while i'm bored, so take it for what its worth.
#7
Makes sense BMW3588, I did not know the ptv was that close on his setup....I didn't read his first post as well as I should have....so I change my statement and agree with you