A .030 over 440 with pistons .005 down the hole, 6cc valve pockets, 84cc heads. .040 gaskets is right about 10:1.

With closed chamber aluminum heads it will have proper quench.

That’s how I’d build it.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads