318/5.2 Magnum deck clearance (quench height calculations)
I've now read a couple stating theie pistons were .050" in the hole. With a .047" gasket (supposed OEM size), that's a .097" quench height (which would explain why these engines have terrible economy and knock so blasted much). But, I have some contradicting info...
With block deck height: 9.058-9.060, stroke: 3.31, rod length: 6.123, and piston compression height: 1.81, I come up with -.006-.008 deck clearance. The piston tops would be .006-.008" out of the hole @ TDC. With a .047 gasket, that would leave .039-.041" deck clearance, which is about where it should be. What am I missing here? We know the block deck height, rod length, and stroke are all correct, but I'm not 100% on OEM piston compression height. I'd very much appreciate some light on the subject.
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