Should be about 10.3:1 compression ratio, converter is a 3000 stall, 4.11 gears. I can grab a couple gallons of gas here and there, just trying to make the point that coming by an extra $300+ for a new intake or more for a set of aluminum heads isn’t in the budget at the moment. Trying to work with what I’ve got. I do have an edelbrock dual plane for a 383-400 that is up for trade if someone has a 440 intake that they want to swap.