Pam

I have a 1981 Z28 with a 350 V8. I would like to replace the radiator but there are 3 different radiators for this year and engine size. How do I measure the radiator to make sure I order the correct replacement?
Also - the car runs really hot. Any suggestions on a thermostat replacement?

AL SS590 M6

Welcome to the site. This area isn't the place to get answers. This is where you introduce yourself and your car.
Post your questions in the appropriate area and you'll have many more responses.

shoebox

I'm guessing that the difference in choices is probably the core thickness. The thicker the core, the higher the cooling capacity. Choose what fits your needs. A 180° thermostat is probably suitable for your application.