NYMustang50

Had a block that was o ringed and I decked it to take out the o ring groves. Was told that it will cause the piston to stick out the block is this true?

AdderMk2

more than likely

NYMustang50

Does that mean the block is no good?

scatfox331

depends on how far out it comes. wat thickness head gasket ect.

mjr46

I believe you may be able to get a thicker headgasket but you'll really need to check all clearances

uedlose

well it all depends on if the piston was in the hole or if it was zero decked when it was
O-ringed you should have mocked up the engine with the pistons you were gone to use to see if had the room to take the O-ring grooves out. but if it does stick out you could get thicker gasket to make up some of the difference if you need to Cometic sell them them are not cheap but they are good.