Re: Heater coolant diverter and LS water pump, huh??
The heater part is from a stock 96 and up vortec 5.7 as I will be installing it in my ls ac stock swap soon. It's purpose is to divert coolant back to the pump and stop flow to the heater core instead of stopping flow to heater core and have that line dead headed.
This is for max ac position (in stock apps anyway) and usually recirc heater blower air also in max position. This was part of my 2 year auto schooling in the late 70's
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