302 heads

302's and 340 heads shouldn't be compared. They really aren't comparable. The 302's are not a performance head like the 340 heads were. No big valves or big ports. Really the only thing the 302's have going for them is the closed chamber and that raises the compression a bit but not enough to make up for the increase in performance that you get with the bigger valves and better flow. The valves in the 302's are small as well as the ports. Nothing different than a 273 or 318 head. If you want a head to compare with the 302's test it against a 273 head or open chamber 318 head.