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Old 12-07-2015, 03:36 PM   #21
Pillow
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Join Date: Apr 2006
Location: Warrenton VA
Posts: 144
Re: Radiator needed for 5.3L

I run the stock HD radiator w/o problem. (mechanical fan)

The LS cooling is quite easy on these big radiator trucks. Unless you are going for a high HP engine (heat) or heavy towing, IDK why you need to spend a lot on a radiator.
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