Ok I just thought of something this morning. Don't the transmission cooler lines run into the bottom of the radiator on the Z cars? Either that or I'm only thinking of the dodge caravan radiators, but since I have to replace my radiator if the lines run into the bottom what do I do about hooking up my lines to the new radiator. Or should the new radiator have something for hooking up the automatic oil cooler lines?

Edit: Looking at some of the pictures, it looks like the replacement radiators come with the tubes necessary to hook up the auto tranny cooler lines to it. I thought you might have to order them separate, or hook up an independent oil cooler.

 

Yes, the lines do run through the bottom of the radiator. When you order your new one, you need to specify auto or manual tranny.

 

I think that radiator with the integral oil cooler was only used on a couple of years. 81 for sure.

 

the only oil cooler for the zx's where on the turbo auto's and where external.

 

'79 280ZX with automatic's ran the trans lines to the radiators for cooling. I bypassed the radiator on ours and just went with an external aftermarket transmission cooler though. More efficient cooling, and less heat transfer from the water in the radiator.