Valve / Piston Clearance in 383

There's a related discussion going on in another thread here in the big block section about 383s and compression. Unless you're going to zero deck with those flat tops, and the 516 heads are ~76cc or less, it's going to be a bit of doing to actually hit 10:1 compression. It can be done for sure, but you have to choose the right pistons (zero deck), a tight head gasket, and compact chambers.

The 516 heads *should* be about 76-80cc dressed with new valves and seats, so it might not be far away from your goal, but realistically, you won't "need" 10:1 to make good power with the right cam/induction/exhaust. And I certainly wouldn't steer you away from the stealth heads...but if you do go that route, you'd do well to have them checked by your machine shop for valve sealing and spring installed height...there've been a few folks on here who've posted comments stating their machine work wasn't all that stellar out of the box.

Just food for thought...

EDIT: sorry, just read through the post again; you already have this together and you're asserting it has 10:1 CR-cheers, and I'm sure that 484 will work just fine matched up with the right parts