I'm new to the forum and new to "street rods". I ran a search for over heating problems and didn't find any topics. I just got a 55 Ford F 100. It's not the conventional ride. It has a 68 Camero front clip with a Chevy 327, duel quads, aluminum heads. Don't have all the specs on the engine.The problem is it's over heating. Has a big aluminum radiator with electric fan and has air conditioning radiator in front of the radiator. Hooked the electric fan direct so it stays on all the time. That didn't solve the problem. Changed the thermostat out to make sure it wasn't sticking with a 180. That didn't work. Added "Wetter water?" that didn't work. Took the thermostat out completely and it's running cooler longer but it's still over heating. I have a 160 thermo but haven't tried it yet. Haven't run a radiator combustion test yet to see if I'm getting gas in the water but I don't see any signs of needing a head gasket or cracked head but I might be wrong.Does anyone have a list of simple fixes I should check before I pull the heads? Bigger fan, electric water pump, etc? Thanks in advance for your suggestions.