Machining a block, how it´s going???

moper said

No difference in the compression heights. Bobby. CD is 1.460 on them. It's not a factory stroke.

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Oh, OK non factory CD. That answers it. So at that point the 340's and the 360's can be counted as the same piston. Then they aren't 340's or 360's, there custom pistons. They just share the same bore and CD.