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Hi,
I finally took the head off of the engine from my parts car. You can still read the marks on the top of the piston. The numbers 0.75 are probably the over bore size. The cylinder measured roughly 3.690 with a dial caliper. Does anyone know what the rest of the numbers mean…I’m just curious?

You can also see where the intakes have been hitting the tops of the pistons. The relief looks deep enough but not “big” enough. That’s the number four piston. Looks like something else smashed the top of that piston.
 

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Discussion Starter · #2 · (Edited)

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