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#1 |
Registered User
Join Date: Jun 2006
Location: Stockton
Posts: 114
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Lt1 Water pump Hose connection to stock radiator.
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#2 |
Registered User
![]() Join Date: Oct 2006
Location: Evans, Colorado
Posts: 530
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Re: Lt1 Water pump Hose connection to stock radiator.
hook the upper t-stat hose to the lower radiator outlet. this is the coolant intake side. then that 3/4" outlet on the right side you can remove or plug. that used to go to the overflow bottle on the car. it was also the fill, as the radiators did not have acap, the over flow was presherized with a cap. I tapped that hole to 1/2 " pipe thread and used it for a sending unit location
Last edited by skchevota; 12-19-2006 at 04:10 PM. Reason: typo |
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#3 |
Questionable
Join Date: Mar 2005
Location: Atlanta
Posts: 13,376
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Re: Lt1 Water pump Hose connection to stock radiator.
"Reverse cooling" just means that the water flows through the heads before the block. The LT1 is the only engine GM ever made that runs this way, if memory serves correct.
I am 99% positive that all GM radiators supply the engine from the low passenger side bung and return water through the upper driver side bung. Just look at any car with an LT1 setup and mimic it with your stock radiator and you will be fine.
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#4 | |
Registered User
Join Date: Jun 2006
Location: Stockton
Posts: 114
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Re: Lt1 Water pump Hose connection to stock radiator.
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#5 |
Questionable
Join Date: Mar 2005
Location: Atlanta
Posts: 13,376
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Re: Lt1 Water pump Hose connection to stock radiator.
That one you say is to "overflow tank" looks liek a heater return sized bib.
By the way - if you need to remove any of those bibs, then thread the hole and plug it "the right way", the bib will pull out with some pliers. That one looks J-shaped, so you might be able to pull it out by hand.
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If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. |
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#6 |
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![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: Lt1 Water pump Hose connection to stock radiator.
I put my temp sending unit in the one you have marked overflow tank and used the other one for the heater.
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#7 | |
Registered User
Join Date: Oct 2006
Location: Cheney, KS
Posts: 669
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Re: Lt1 Water pump Hose connection to stock radiator.
You can hook them up either way....it doesnt matter. Since the MOTOR is reverse cooling. It can go through the radiator anyway as long as the radiator does what its supposed to do. Those 5/8 pipes on the passenger side of the pump are for the heater. The one on the drivers side is for the (I know its weird) engine oil cooler.
If you want...get the Y-body water pump. It has just one heater hose outlet on the passenger side. Also, DO NOT lose the hollow screw that goes into the thermostat outlet housing. Its used to bleed out air/steam from the coolent system. If your not able to do that then your expensive LT1 will overheat really fast.
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#8 | ||
Registered User
Join Date: Oct 2006
Location: Cheney, KS
Posts: 669
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Re: Lt1 Water pump Hose connection to stock radiator.
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#9 |
Registered User
Join Date: Jun 2006
Location: Stockton
Posts: 114
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Re: Lt1 Water pump Hose connection to stock radiator.
Ok Kool I got it.
Thermostat hose to the bottom of the radiator. Driver Side outlet to top Radiator. Upper Passenger side with 5/8bibb is the outlet to the heater core. lower passenger side is the return. I guess ima just plug up the other hose on the driver side. Last edited by Kenneth_CS87; 12-21-2006 at 03:28 AM. |
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