oldkimmer said

The factory engines came with a steel shim gasket. .022 compressed. I have ran the 284/484 cam many times and with pistons .045 out of the bore. With the steel shim gasket. Kim.

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nm9stheham said

2 eyebrows and flat-tops I presume? Sounds like nice pistons.

If they are Ross PN 99625 then the deck was cut a lot more than .010" if these are really sticking out of the block by .025". Have you actually measured this .025" out of the block? This Ross PN starts out .036" shorter than the stock 340 pistons so would be about .018" below a stock uncut deck.

IDK if Ross coulda done custom compression height pistons here....

Click to expand...

nm9stheham said

2 eyebrows and flat-tops I presume? Sounds like nice pistons.

If they are Ross PN 99625 then the deck was cut a lot more than .010" if these are really sticking out of the block by .025". Have you actually measured this .025" out of the block? This Ross PN starts out .036" shorter than the stock 340 pistons so would be about .018" below a stock uncut deck.

IDK if Ross coulda done custom compression height pistons here....

Click to expand...