Thanks for the input. The motor is stock 440 bore and I checked valve clearance on a 440 and it looks fine. The pistons have some pretty decent reliefs, and I plan on checking clearance there. The heads are off right now waitting on parts. I think quench is gonna be a strech at .025 in the hole, and a .039 head gasket. I was thinking about putting on a thick head gasket to drop the compression a tad since now would be the time. dynamic calculator says my CR should be 10.7 to one.