Trying to figure out if there is a solid metal radiator that is compatible with a 91 S10 blazer with the stock 4.3.
For the most part all i have seen is ones that say they will fit a V8 conversion only.

I have gone through three radiators so far and i would like to just eliminate the plastic tanks.

 

Engineered Cooling Products

These are very good quality aluminum radiators. I have one myself and I've been happy with it.

 

Those are actually preaty decent prices for just the rad.

 

I went with an ECP radiator for my 99. I had a local shop weld in an internal oil cooler bacause the ECP one did not have that.

If I were to do it again I might have installed the larger oil cooler and an electric fan.

Look in my build thread for my write up on this.

 

The description on that link says S10 Trucks I take it the fitment for a Blazer is the same?

 

Generally, yes. The S10 trucks and Blazers take the same radiators. If you are thinking of installing one of these aftermarket radiators, be sure to look at mine and others' posts for the installation as modifications will be necessary.