Okay guys. I've been a fan of this forum for many years and finally got around to making an account. But, I'm having some troubles. I have a 55 Dodge Town Panel with a 305 out of a 94 pickup that was TBI. I changed the intake, added a new gasket, and added a carb. The motor came out of a running truck with no issues other than frame damage from a wreck in the rear. I drove the truck to my garage before yanking out the motor. I have looked at almost every thread here regarding overheating SBC's. I feel like I've tried most everything. The 305 will run 205-210 while driving, which isn't too bad, but when idling or sitting in traffic will get up to 230-235 and start puking. It originally had a 195 thermostat in it and I thought it was bad. Replaced it with a new 195. No change. Went and got a new 160 thermostat, still no change. On to the next suggestion. The 55 did not have a fan shroud. I added one that covers about half the fan area. It has a mechanical fan. Still no luck. I added an electric puller fan to try and run at idle to see if it would bring the temp down. No luck. So I've got two puller fans and still can't lower my temp, even with a shroud. I read that maybe the vacuum advance not being hooked up could cause timing issues. Hooked it up, adjusted the timing, no help. I changed both radiator hoses to ensure that there was no vapor locking, collapsing, etc. I am running a griffin aluminum radiator. I will admit, I bought it at a swap meet but it doesn't leak. I ran water from a water hose through it and cleaned it out. It seems to be doing okay as both sides are heating up so I suppose it's circulating? (I am definitely not a radiator expert.) It had a cheap Chinese 16-pound radiator cap on it, so I switched to a Stant 7-lb from the local parts store. The overflow outlet is not hooked up so I don't have an overflow tank. Just the nipple from the neck of the radiator. (Is it possible air is in the system? If so, how would I know and how would I fix it? Would it cause overheating?) At this point I'm getting very frustrated. I feel like it's something simple I'm missing but I can't for the life of me point out what it could be. I've done my research on here and have tried everything I've read. I wanted to make sure I did before starting my own thread. I even added a whole bottle of water wetter to see if that would help. Does anyone here have any advice to offer? Doesn't seem to matter what temp it is outside. The only effect that has is how quick it heats up, not the max temp it reaches. Please help me out here guys!