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Old 11-12-2015, 07:46 AM   #39
Andy4639
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Join Date: Jan 2002
Location: MURRELS INLET, S.C. U.S.A
Posts: 19,972
Thumbs up Re: Heater Core Replacement (non-A/C)

Heater hoses should be hooked up so the inlet is on bottom and outlet on top. Small hose goes to bottom bigger on top. Two reason. When you fill the truck up with water you want it to go to the core and fill it up with no air pockets. Also when the truck is running the outlet hose is bigger for expansion of the hot water.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour


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Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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