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Andy4639 · 09-14-2017, 01:42 PM

I have both in my 71 C-10 and the 56 Bel Air. I shut the manual one off during the summer to help on the AC temperature inside the cab. If the heater is letting hot water pass it makes the ac temp go up. Mine was good for almost 6-10 degree's inside the cab.

09-14-2017, 01:42 PM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Heater Control Valve I have both in my 71 C-10 and the 56 Bel Air. I shut the manual one off during the summer to help on the AC temperature inside the cab. If the heater is letting hot water pass it makes the ac temp go up. Mine was good for almost 6-10 degree's inside the cab. __________________ 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 http://upstategmtrucks.com/ 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.