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- - Water Pump Question (https://67-72chevytrucks.com/vboard/showthread.php?t=417920)

soule64

08-23-2010 01:01 PM

Water Pump Question

I was hoping someone might know off-hand which port is pressure and which is the return on an LS engine water pump. I finally got my AC working this weekend (Vintage Air) - works great at idle, but when under load it starts blowing warm air. My Classic Air did the same thing on the '68 and it ended up being the heater hoses being hooked up wrong. I was thinking this might be the same problem, but before I start spilling fluid everywhere I would ask.

glock35ipsc

08-23-2010 10:33 PM

Re: Water Pump Question

Heater hoses? The 5/8" is supply, the 3/4" is return.

C-10 simplex

08-23-2010 10:46 PM

Re: Water Pump Question

Why did the factory do this?

______________________________________________________________________________________
Luck, timing, consistency, and persistence are EVERYTHING----especially when pouring concrete.

glock35ipsc

08-23-2010 10:51 PM

Re: Water Pump Question

Do what?

soule64

08-24-2010 10:15 AM

Re: Water Pump Question

Quote:

Originally Posted by glock35ipsc (Post 4154243)

Heater hoses? The 5/8" is supply, the 3/4" is return.

Thanks. Looks like I did it again - I installed the shutoff valve on the 3/4" side. Dang it. I should know better than that...

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