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Andy4639 · 03-17-2015, 04:09 PM

If everything is working correctley you shouldn't have any problems at highway speed cooling. If that in fact is your problem then you have a restriction some place in the cooling system.
Jack the front of the truck up as safely as you can and get all the air out of the system. Make sure your bottom hose has the spring inside it to keep it from colapsing. Also...

03-17-2015, 04:09 PM	#20
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Mystery Part... If everything is working correctley you shouldn't have any problems at highway speed cooling. If that in fact is your problem then you have a restriction some place in the cooling system. Jack the front of the truck up as safely as you can and get all the air out of the system. Make sure your bottom hose has the spring inside it to keep it from colapsing. Also... Attached Images __________________ 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.