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Andy4639 · 11-23-2015, 03:06 AM

The vacuum may be backwards but the valve doesn't care which way you mount it. It either opens when vacuum is applied are it closes when it's applied. So you need to know which way it operates. I guess we are saying the same thing in just different ways I think.

11-23-2015, 03:06 AM	#20
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Photo of original heater control valve install? The vacuum may be backwards but the valve doesn't care which way you mount it. It either opens when vacuum is applied are it closes when it's applied. So you need to know which way it operates. I guess we are saying the same thing in just different ways I think. __________________ 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.