Well not only did I do the carb swap this week I swapped the radiators. I took the stock one and replaced it with an AFCO 26” x 18.5” cross-flow Aluminum radiator with a massive puller fan that stays on anytime the car has the key on. Only issue was the radiator cap- it didnt come with one so i took the old one off the old radiator and put it on the new radiator. (Doesnt fit, 16 lb and I need a 20 lb) Anyway, ran it down the freeway, did well, exited, sat in traffic 5-10 mins (stop-go) and the needle got over to the "H". I weasled out of traffic and got moving again and it went back down. Man, now im back to square one. What else could be causing this? What degree thermostat should i be running? Anything else I can do to try and keep it cool?