I have a 87 GTA 350 bored .60 over, and lately in traffic the temps will climb to around 240 or so (I have a digital dash and it gets up to the last line before the red 260) with both fans (stock dual fan setup) running. The question is I have a northern 3 or 4 core copper rad I can't remember i think it is 3, but would switching to a aluminum rad help me out considerably or marginally. And I do have ac but I can only use it when I am on the highway otherwise the temps would sky rocket. Although as soon as I hit the highway the temp usually goes to 1 notch below 190 without ac. Any ideas if aluminum would be better??

 

Anybody?????????????????????

 

I've been told that you could use a Modine 951.It is aluminum.
I've haven't done it,but have heard it's a bolt in.Was told that it came stock on camaros and firebirds.