went out run the car with no cap, 15 min. no air, the stat has 3 1/8 holes drilled in it, and the bbc have a bypass hose off the water pump to the front of the intake, I am 99% that air is not the problem.
didn't mention earlier but when the car was gettin ot I did stop once the hood, firewall fenders (part over the headers) were (really hot!) used a laser temp gun the hood was 210 degrees.
I really don't know what I could do about air flow, th grille is the only opening, the inner fenders are cutout @ the rear, for the headers to go over the frame then dump out at the bottom of the rear of the front fenders.
do you guy s think the rad could not be big enough?
besides cutting the hood sides off, or changing the hood any other idea