It's difficult to say how the aluminium rad would compare to the stock style rad if I had of gone with it instead..The stock rad always worked well with the 300ish hp 302...One other thing I have noticed is there is a tremendous amount of heat given off the top side of the motor...I'm imagining since it has aluminium heads and intake alot of heat is disappated upwards to the air that wasn't with the stock cast iron heads...This likely helps keep the water temps down a little as well......The only other aluminium rad swap I have done was in my old 1982 F-100 with a 300 six banger...I changed from a 3 core copper rad to a single core aluminium...The aluminium rad was far superior...I had an electric fan on a toggle switch and after the switch to the aluminium I rarely ever had to turn the fan on.

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1968 mustang..408 windsor.Vic jr heads and intake.Pro Systems 950HP holley, 1 3/4 hooker super comps,Custom CI solid roller camshaft,Probe shaft rockers, 4 speed with 4:11 detroit locker.