The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 71 350 running hot coolant backup up problem

Andy4639 · 01-12-2018, 07:59 AM

The fan shroud should be blocked off so that all the air pulled with the fan comes through it and not around it. The blades should be about right 50/50 but as stated a good stock fan blade will help you. Those flex fans are not for street driven vehicles and if you have AC your never going to keep it cool.
Again 180* thermastat is reading high 190's is pretty normal. It's not going to run 180* unless you do some work are buy a good aluminium radaitor.It doesn't matter what your other truck is running it has nothing to do with it.
It's a completely different vehicle.

Now if you want to swap the radiator out in both to see then yea go for it.

It wouldn't surprise me if it's the sendor for that gauge.

01-12-2018, 07:59 AM	#52
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: 71 350 running hot coolant backup up problem The fan shroud should be blocked off so that all the air pulled with the fan comes through it and not around it. The blades should be about right 50/50 but as stated a good stock fan blade will help you. Those flex fans are not for street driven vehicles and if you have AC your never going to keep it cool. Again 180* thermastat is reading high 190's is pretty normal. It's not going to run 180* unless you do some work are buy a good aluminium radaitor.It doesn't matter what your other truck is running it has nothing to do with it. It's a completely different vehicle. Now if you want to swap the radiator out in both to see then yea go for it. It wouldn't surprise me if it's the sendor for that gauge. __________________ 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.