Uncut block at 10.725, 88cc heads, .040 gasket....... you’re gonna be in the 8.55:1 vicinity with 2266’s.

Starting with that scenario, swap to the Icon IC 9953 pistons, mill heads to 83cc...... puts you at 9.85:1.

Decking the block to zero brings it up to 10.17:1.

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