I use an old aluminum Weiand (8209?) water pump with no warm-up recirculating port, and straight impeller modified for a welded ss backing disc. Pump is 20 yrs old & much modified. The change did NOT lower running water temps with a stock rad. In fact, I have a whole list of things covering the entire cooling system that did NOT change the water temp. during highway cruise. The only thing that DID lower it was the Fluidyne radiator w/Flexilite sucker fans.
And for still-unexplained reasons, I only get about 1-2 yrs out of a thermostat (either Windsor or Cleveland-types, stock or aftermarket) before it begins sticking & needs replacement.
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