318 Build.. Zero Deck or Stock Deck Clearance?

I think true compression ratios on 318's without the 302 heads would average 8 to 1 up to 8:4 to 1, pending on head cc and how far down the hole the pistons are. Lets say his is an 8 to 1 motor. Ok, add the .030 over KB pistons he selected. Compression, without doubt, has risen. Now throw the closed chamber mag heads on there, and without doubt, compression has risen again. I don't doubt for a minute that a true 9 to 1 motor here lives, and that could be checked. It may be even higher.

Look, deck the block, I'm all for it, Just say'n to get a compression ratio for the street, I think he is already there... Check the compression now, he may be at 9:3 to 1 as it sits.