Getting ready to install the heads on my 440 and looking for advice here is the build
2355 flat top pistons .015 deck clearance
915 big valve ported heads 75cc chambers
284 484 68 degree overlap purple cam installed @ 108

With a .039 gasket it comes to 10.6
With a .051 it's 10.4
With a .060 it's 10.17

For what I'm reading the only chance of quench will be with the .039 head gasket,and that lowering the compression with the thicker gasket may make it ping more by losing the quench,I want to be able to run 93 ultra without cranking back the timing a bunch. I went with the original 484 to kill some cylinder pressure. Is this combo gonna be a problem to keep from pinging?
Looking for some thoughts and experience on this

Thanks

Duane