hi cuda guy,
all mopar V/8's came with either a 22" or a 26" radiator and corresponding shroud. all the air conditioner equipped cars had the 26" radiator. when it comes to keeping a mopar "cool" "bigger is always better" so your really need a 26" radiator for your 440. if you use an original 26" mopar radiator, you really need the factory fan (clutch fan if you can find one) AND the shroud. mopars actually will run cooler if you have the shroud in place. now, if you aren't a strict "OEM" guy, a new after-market aluminum radiator with twin electric fans will keep your engine cool even in very hot temps or waiting in traffic. if you use a new, larger aluminum radiator and electric fans, you don't need a shroud except for looks. don't forget to run a thermostat at the intake manifold radiator hose - 180 degree is the recommended thermostat for a 440. as to the trans cooler - if you use an aftermarket new aluminum radiator with the trans-lines hook-ups, that should be sufficient for cooling your Torqueflite. if you use an older OEM mopar 26" trans, i would add the separate trans-cooler just to be safe. one thing to look for: if your car was a former "race car", the heads may have been milled to increase cylinder compression. this will often cause overheating if such an engine is used on the street. if you have aluminum heads and you experience overheating, that may be a sign that one of the heads has suffered "heat warping" which is not uncommon with aluminum heads. finally, make sure your timing is right on as "retarded" timing can also cause overheating. as a last thought, i would use one of the new "heat absorbing" anti-freeze products.
i hope this helps...
