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406 Q-ship · 08-25-2011, 11:48 AM

Do yourself a favor and trashcan that downflow radiator, put a stock crossflow back in the truck. The downflow radiators are nowhere near as efficent as the crossflows that these truck came with, there is a reason that just about every manufacture went to crossflows. Besides the way that downflow is in there (big gaps at the sides) the air will just go around and not through the core. Use a heavy duty cooling with A/C Radiator for a SBC including the fan shroud (the fan are always pretty close even though it is a Olds). Put a good clutch fan on it too.

08-25-2011, 11:48 AM	#22
406 Q-ship Registered User Join Date: Oct 2010 Location: Largo Florida Posts: 632	Re: Olds powered 72 GMC Do yourself a favor and trashcan that downflow radiator, put a stock crossflow back in the truck. The downflow radiators are nowhere near as efficent as the crossflows that these truck came with, there is a reason that just about every manufacture went to crossflows. Besides the way that downflow is in there (big gaps at the sides) the air will just go around and not through the core. Use a heavy duty cooling with A/C Radiator for a SBC including the fan shroud (the fan are always pretty close even though it is a Olds). Put a good clutch fan on it too. __________________ Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle."