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Andy4639 · 02-18-2015, 11:22 PM

You do have all the cab vents closed and any holes in the fire wall sealed up.
Both the kick panel vents need to be closed off.
Driving it shouldn't make any differance unless you have a lot of holes letting in cold air. Once the truck is warmed up it should stay. Does the needle go down on the gauge once you start driving it? The gauge is motor temp not radiator temp.

02-18-2015, 11:22 PM	#45
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Heat sucks You do have all the cab vents closed and any holes in the fire wall sealed up. Both the kick panel vents need to be closed off. Driving it shouldn't make any differance unless you have a lot of holes letting in cold air. Once the truck is warmed up it should stay. Does the needle go down on the gauge once you start driving it? The gauge is motor temp not radiator temp. __________________ 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.