That is a Good wright up on the different heads.. Buy the way they talked the 302 swirl port design were a closed (heart-shaped) combustion chamber and had a average of 62cc in volume..
And they came with a dished piston to keep the compression ratio from being too high.
I bet that's why the motor ran so good before the carb messed up, Because the pistons in it was not Dished they were flat tops with valve reliefs.. The motor had maybe 15K miles on it since it was built and bored 60 over. I got the truck off of a buddy and he had just built it. Would just ask him what all was put in it bet he's not with us any more..
The reason we pulled it was kaz it started using oil and smoking.. And I got a good deal on a 28K 413 and trans out of a Winnebago and it was going in a BIG 4x4 truck.. So the motor has just been seating in the shop..
