Magnum in 70 Dart, can't keep it cool.

Very familiar with getting the air out of the cooling system and have made sure that there is no air in my system many times. Not bashing the radiator, it is a 4 row but it just doesn't cool any better than the stock unit I took out.

Wish these guys would try getting all the air out of the system before bashing the radiators (any brand for that matter). The guy down the road has a Dart with a 500+ cubin inch motor with a smaller radiator and a 16" fan, and he has no problem with it. Although he does not drive it on the street, it would surely heat up very quickly just idling I would think....