Looking for a 1966 442 Radiator. I bought what was supposed to be a napa replacement and it has the plastic tanks and wont fit the upper and lower radiator supports. Anyone have a 66 442 radiator? PM Me

 

The radiator you got should have been a #322, Napa shows a copper radiator part #CU351. It is showing to be a special order only. You may be able to use that part number to have other parts houses cross it to their number. If you have an original radiator, you might be better off having a radiator shop put a new core in it. There are many other GM cars that used that same radiator. Cutlass 66-71, Chevelle 68-71, and Skylark 67-71. There may be others also. You might find a used radiator if you don't have one and have it recored.

 

I don't believe that the NAPA # CU351 is an accurate replacement for the factory '66 442 radiator based on the specs that they show on their website:

Comments : Copper Core; Brass Tanks
Engine Oil Cooler Size : None
Radiator Core Size : 28 3/8" x 16 15/16" x 1 1/4"
Radiator Inlet Connector Size : 1 1/2"
Radiator Inlet Header Size : 2 13/16" x 18 3/4"
Radiator Outlet Connector Size : 1 9/16"
Radiator Outlet Header Size : 2 13/16" x 18 3/4"
Transmission Oil Cooler Size : Concentric; 12 1/2"