Can I please get some help with a street build 383.

Bore-4.280
Rod-3.375
Piston-L2315F

The short is together with a flat top piston and it’s .008th in the hole.

Cam is an MP 272 adv & .455 lift & 112 lobe

915 Heads are slightly ported they flow 233 @ 500.

Db4p slightly ported single plane intake

Going to run stock manifolds.

915 Heads are at 83cc after valve job.

I was planning on using Felpro .039 head gasket 4.50 bore

What is a good compression range for this combo? Not sure if I should leave the heads at 83 or cut them.

Street car, 4 spd 3:91 gear