The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Questions about radiator/engine flush and running water or coolant

Andy4639 · 09-12-2014, 04:09 PM

My suggestion is to take the old thermostat out and replace after you have gotten all the old water and gunk out.
To get almost all of it out jack the rear of the truck up high enough so when you take the hose off the water pump it will drain almost every drop of water out of the block. Have the thermostat out of it when you do this.

09-12-2014, 04:09 PM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Questions about radiator/engine flush and running water or coolant My suggestion is to take the old thermostat out and replace after you have gotten all the old water and gunk out. To get almost all of it out jack the rear of the truck up high enough so when you take the hose off the water pump it will drain almost every drop of water out of the block. Have the thermostat out of it when you do this. __________________ 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.