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LS1 water pump flow direction

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Old 04-17-2009, 05:20 PM   #1
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Default LS1 water pump flow direction

I am installing a Vintage Air kit in my 69 Camaro w/a LS1. Which heater hose nipple (3/4" & 5/8") on the water pump is the outflow?
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Old 04-17-2009, 07:42 PM   #2
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The 5/8" is the outlet (to heater) and the 3/4" is the return (from heater).

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Old 04-17-2009, 08:07 PM   #3
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Thanks For the answer Russ!

I first called Vintage Air about this but they didn't know the answer? (I guess they have never seen a LS1 used with their one of their systems) I then called a local Chevy dealership...they didn't know either!!

ChrisP
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Old 04-17-2009, 09:00 PM   #4
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In most cases with everything.. the smaller hose will alway be the presure side.. A/C and radiator hoses if you take notice to this.
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Old 04-18-2009, 06:07 PM   #5
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Quote:
Originally Posted by bczee View Post
In most cases with everything.. the smaller hose will alway be the presure side.. A/C and radiator hoses if you take notice to this.
Correct! You made 100%!

Russ
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