89 s15 ,350 swap , semi built engine , .30 over 10:1 ,aluminum heads ported ,comp cam(not sure what size ,comp lifters push rods (magnesium) comps valves springs and rockers apr everything ,pushes 420-450 hp depending on the temp , having cooling issues ,just had to pull the heads and do the headgaskets they let go (previous owner didnt torque the heads properly for apr head studs) everything else was fine , wanting to bring temps down ,deleted ac , whats the best radiator to use ,and i am assuming its better to use electric fans rather then an after market bolt on fan on the water pump..street driving with some hard pushes on it /sitting in traffic seemed to rise more than i liked before the headgasket went

 

Unfortunately, the best isn't cheap.

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