Exploding Head
#12
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clicked on this thought I was in the porn section LOL
#13
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#14
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Pace performance 5100 502 short block. What 454 you now have? what gen? Gen 6 mag cam is same as 415 502 mag. No 502 were built with cast pistons or cranks, at least not by GM. the only long blocks merc built were blue.
#15
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No difference between the GM ZZ502 and the Merc 502 shortblock other than the oil relief valve, oil pan, the cam, flywheel (GM comes with flexplate) and a heavy coat of black paint. Use the cam you have in the 454 Mag if its a roller, or find one (454 Mag or 502 Mag are the same), and change out the oil relief. I just purchased a ZZ502 shortblock and the freeze plugs are no longer brass, NO Worries< they are now stainless. I believe GM performance offers this engine with iron rectangle heads. May want to ensure it has marine type head gaskets if you purchase with heads.