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Old 04-17-2018, 06:42 PM   #3
chefk85
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Join Date: Jun 2015
Location: Bellevue, Id
Posts: 173
Re: VORTEC coolant bypass

Okay so it looks like bottom hose on heater core is the inlet and top outlet. From what I gather the passenger side pipe on WP is for the coolant bypass only and the drivers side is the heater return. The engine is in and everything is put on so id rather not have to tap anything at this point unless I have to. It would probably be easier for me to cap off the radiator port for the return line and just run it to the water pump return pipe(I also picked up the nifty hard tube from the junkyard that the factory uses to route the heater return to the pump). Ill run a hose from passenger intake before thermostat to inlet on heater core. Sound right? Sometimes I just need to be reaffirmed everything is correct haha.

I suppose also I could just cap the return pipe on the pump and not pull and tap and leave my return right where it is in the rad. See any issues with my logic here?

I also forgot to reply to you but thanks for the fan and clutch suggestions. I ordered the fan and made the stock L31 clutch I got from the junkyard work.

Thanks again BW,

chefk85
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