Quote:
Originally Posted by Vettezuki
I forgot, what's quench again? I'll bring the plugs with me this Saturday. I already ordered a set of copper autolites on the colder end of the spectrum.
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The distance the piston flat (closest to head) is from the flat area of the head. 045. is considered the optional distance. Anything much more than this will contribute to engine pre-ingition.
Mine is .054 on current 400. On my first LT1 I had a .068 quench and it pinged like a MF. I closed it up on the next build (everything else being the same--except even higher cr) with the piston .005 below deck and the head gasket was .042 I had no pinging at all. Quench is VERY important.
