So I have a 4.3 that apparently was bored over (confirmed) .060.

The main issue with that is apparently heat; if I can keep it all cold it'll run smooth and last longer.

What can I get to cool my engine heads/pistons more than stock?

I'm getting the engage swapped in 60 days. But I need it to not blow on me before then. I was hoping to get some tips like oil weight, or some bolt on, or some trick to keep cylinder walls from over heating until then. I know nothing about bored cylinder head stability other than people have done this and gotten away with it without issues. I didn't do it, I bought it like this.
So a performance radiator? How about an intercooler? I'm suggesting those two things because they would survive across engine swaps.

 

Getting a radiator for a G Body with a 5.7 diesel would be a easy bolt on as it uses all the factory mounting. A properly work fan and shroud and thermostat should be more than efficient on that engine. Having a engine that's bored oversize with a stock cooling system really shouldn't have a problem.

 

The first plan of the little block remained amazingly unaltered for its creation run, which started in 1955 and finished, in traveler vehicles, in 2003.



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