New motor running way to hot in 95 cobra

It's kind of a long story.... This motor has been trouble from the beginning for way more than just this. I know new motors and modified (especially stroked) motors place more of a demand on your cooling system, but mine is almost undriveable. With the old motor, it never got hotter than 180 degrees, or the "OR" area. Now, it goes past the "M" and occasionally the "A" of "NORMAL" on the stock gauge. The fan does not appear to come on until after the "M" is almost passed. I have tried getting it to boil over, as it does not want to and there appears to be air in the cooling system. The upper radiator hose, when pulled, reveals coolant recessed into the thermostat, like it's not getting around. I installed a 180 degree thermostat to help combat this new motor's propensity to get hot, but it's having little to no effect. It does keep the temp from exceeding the "A" anymore. The water wetter I poured in looks to have little effect as well. I could swear my fan came on sooner with the stock cobra motor. I realize I should modify my cooling system, but it should be at least driveable, right? Anybody with any manner of experience, suggestions or comments would be greatly appreciated!! Anybody know how to decode the stock gauge?


here's the short list: CHP pro street all forged 331, AFR 185s, Comp blower cam, 7 quart kicked out sump pan w/ higher volume pump, stock cobra upper and lower intake with spacer, 65mm TB, new water pump, stock oil cooler, and I don't know what else might make a difference....but that's the short list.

Well, I've ran it a few times to the point of near OVERheating it with the radiator cap off, and it never boiled over, or burped. It is sucking it dry little by little, I guess that's a sign of SOME air getting out...... I've tried turning on the heater to suck some heat off the engine and it actually makes it hotter; go figure. This car doesn't want to make sense. Anybody know somewhere I can get a fan with an adjustable turn on temp for a 95? as usual, it's always for 79-93s. I'm sure someone makes a radiator/fan upgrade package for our cars, I just haven't found them as of yet.

It's possible but not likely with the head gaskets. I originally had SEC copper race gaskets (the motor is built for boost) to lower my compression a little more and O-ring it all, but they were found to be not sealing right as we were about to crank it all up. I deployed days after this, and the same friend of mine that helped me build the motor swapped the gaskets and flushed the oil while I was overseas. I doubt he put them on backwards, but that sounds like it could cause all of the above problems I've had. Lets hope it's just needing a good burp. The level in the coolant does keep going down with none in the overflow, oil, and none on the ground....... What's an anderson PMS?