1989 Chevrolet Other engine overheating

OK, well I am looking more toward the Radiator since pretty much everything else has been changed.

Now a few other things, less likely but have seen a few times in my 25+ years as a mechanic.

Have you noticed if any of the hoses are or have collapse, if not run vehicle and check all hoses. The lower radiator hose is the one I have seen collapse, and it's usually do to age.

Check the top hose does it get hot after vehicle has been running or is just warm. If just warm then thermostat isn't opening completely so may have a bad one. I would also suggest using a 180 instead of the 195.

Forgot to ask what is the exact vehicle you have?

OK, So all you are giving me is that it is a Chevy with a 350 or 5.7L engine. Getting the exact Make, Model and engine I can look it up to see it there maybe something I may be missing.

So I know it's a Chevy now what kind of chevy.

Need Model - I take it that it is 2 wheel drive since you have it as RWD and not 4WD

If Car what model Malibu, Monte Carlo, etc

If Truck what Model - C1500, C2500 C3500

If Van what Model - Astro, G10, G20 G30

And I know it has a 5.7L/350 Cubic Inch Engine