If I put a new high performance motor in my 86 Trans am (305) will i need to buy a different radiator or will my stock one do just fine?
I have the replacement from advance(plastic tank aluminum core). will that one hold up and cool properly, or even how about the brass and copper one from advance, or do i just need one totally different than these?

 

IF the rest of the cooling system is in good shape, that will be MORE Than adequate.

I've run these alum / plastic 1-row radiators in everything from hopped up 350's to big blocks without problems.

 

yeah i have the same radiator and its been working great for over 2 years that with a 180 stat and i keep cool.