So I had a post a while back about a cooling issue on my 74 Challenger, 318/904 car mild cam, cast iron 4bbl manifold, Carter AVS, Magnum exhaust. With 2 core aluminum aftermarket radiator, I couldn't keep it under 220 - 230*. Switched to a 3 core and I can run 200 and under even with a 180* thermostat. However, after about a half hour run, (Good and warmed up), it starts crapping out at WOT, stalling at stops and hard to re-start. I believe its fuel starved. It starts long enough for the started to quit turning then dies. After several attempts it will start but run but erratically. Misses and runs rough at anything over an idle until its cool again.

Question: Will a weak fuel pump act this way when it gets hot? Carb too hot and boiling fuel in bowl? Timing issue; Weak advance springs? Runs great at first but tends to feel starved at WOT

Thanks
Scott