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RussMcB · 06-09-2015

Last month at NCM (C4 Gathering) and Road Atlanta yesterday I couldn't drive more that a lap or two at speed without the coolant temps quickly reaching 124-127 degrees C.

I still have a stock radiator, which I plan to replace, but I'm not sure that by itself will solve the problem, which (I assume) is primarily due to the LT-5's unique high-RPM radiator bypass system.

If I switch to an electric water pump system (along with an improved radiator), will that solve the problem? Has anyone done that and confirmed it keeps an engine cooled during semi-sustained high RPM's?

Are there any good write-ups describing how to do it, parts needed, what to do with the original water pump, etc.?

Thanks.

06-09-2015	#1
RussMcB Join Date: Jan 2015 Location: Marietta, GA USA Posts: 1,148	Electric Water Pump questions ... Last month at NCM (C4 Gathering) and Road Atlanta yesterday I couldn't drive more that a lap or two at speed without the coolant temps quickly reaching 124-127 degrees C. I still have a stock radiator, which I plan to replace, but I'm not sure that by itself will solve the problem, which (I assume) is primarily due to the LT-5's unique high-RPM radiator bypass system. If I switch to an electric water pump system (along with an improved radiator), will that solve the problem? Has anyone done that and confirmed it keeps an engine cooled during semi-sustained high RPM's? Are there any good write-ups describing how to do it, parts needed, what to do with the original water pump, etc.? Thanks.