My Dads 383 has kb 400 pistons , 84cc edelbrocks heads and .039 gasket the motor has been decked so the piston is .005 inthe hole and the final calculated compression was 10.2-10.4 to 1 .
The motor runs strong with rpm intake and 750 holley hp vac sec carb
and mp electronic ignition Chrome box .
with the comps cams 275hl cam strait up .and hedman headers with 2.5 exhaust . = good fun burning the tires with quick stab of the throtle he has even been pulled over for it and really was not trying to rip them up at all so he says