I heard there was a difference in air condition and non air condition radiator core supports for a 1966 Cutlass. I haven't found a difference yet. What is the difference?

 

Just a guess > I would think the a/c radiator core support maybe a little wider, also don't forget the condenser sits in front of the radiator as well. I guess the question is did GM use the same for a/c vs non a/c cars. I can measure my 66 442 NON A/C and get back to you if you have a cutlass with a/c you can compare. Someone on this site may know this, this is a good question...

 

These parts are from a '66 AC car. I frankly don't know the difference between, or if there is a difference.

 

The difference would depend on the radiator. AC cars got heavy duty cooling, which contained V01 bigger radiator. I don't know if the cradles were different on it, probably 2 vs 3 core tanks. The condenser bolts onto the actual core support, not the radiator top and bottom plates shown here.

 

There isn't any difference in any 66 radiator support. The A/C cars have additional bolt in brackets for the condenser and the upper and lower plates are the same except the 6 cylinder cars. 2 row and 3 row radiators have the same tanks, so the saddles are the same.

 

To expand on the above response, the upper and lower plates are the same on 6 cylinder and v8 cars, except for where the saddles are welded to them.