Bnawty00SS

i am planning on using tsp's stage 2.5 ls6 heads. i was told to mill the heads .025, i am using a 231/239 duration cam with stock head gaskets im just curious as to know if im gonna have piston to valve clearance issues with a stock piston? i was told yes and no so far lol!

PREDATOR-Z

Don't expect more from the net. As a guess, I would say yes there will be PTV contact, or the margins would be too close for comfort.
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mark21742

If your bumping up your compression go for the .025" mill, .040" head gasket and cut valve reliefs....always check you ptv clearance.