Compression options on LS2 build
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I'm finishing up a stock bottom end rebuild on an LS2. I have a pair of used TEA 243s that I had CC'd and came to 68cc. These heads matched up with stock gaskets come to ~10.5 CR. This will be a DD on 91 octane but I want to maximize its efficiency/torque. How much more compression can I go for, if any, and what would be the best way to go about it? This will be paired with an EPS 226/230 cam and the piston at TDC is above the deck .010.
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Appearently so. Their website says 67cc, my builder measured 68cc. What is a comfortable compression to be at with this cam and 91 octane? And is milling the head a better route than thinner head gaskets? Are the thinner head gaskets reliable? Would I be better off with a head that flows a little less but has a smaller CC?
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Your cam is small enough that you can probably get away with milling down the heads and reducing the chamber volume. That's really the only options you have. If you wanted more compression, a ported 5.3L head may have been a better idea.