Can an AC Installed make the engine run hotter than before? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GCncsuHD · 07-29-2014, 03:41 PM

Just reiterating what has already been stated.

Yes, the AC condenser will add a substantial amount of heat in front of the radiator, putting more of a load on the cooling system.

210 isn't bad at all, but as mentioned, it doesn't leave a large margin for error.

Do you have pics or details of the e-fan setup? Are they just strapped to the radiator? Or are they properly shrouded to utilize all available cooling area?

Quote:

Originally Posted by MARKDTN

Yep, I used to worry if if went over 180. Now 210 is no problem. It will actually get better mileage the hotter it gets. On 90ish Corvettes and F-bodies the second fan didn't kick on until 230 unless you were running the a/c.

True to an extent, yes an internal combustion engine will run more efficiently and powerfully at a higher temperature until detonation becomes an issue.

Andy4639 · 07-29-2014, 10:10 PM

I just drove the 71 all week at the beach and then to NC and back to SC. It was 95* most of the time and I drove the truck the whole time with AC running. 210 was what it ran just about the whole time and this is fine it's what the engineer's whant the truck to run at.
I think you have plenty of room for it to run hotter. Sitting still is the worst case senerio so what does it run at on the road?

07-29-2014, 10:10 PM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Can an AC Installed make the engine run hotter than before? I just drove the 71 all week at the beach and then to NC and back to SC. It was 95* most of the time and I drove the truck the whole time with AC running. 210 was what it ran just about the whole time and this is fine it's what the engineer's whant the truck to run at. I think you have plenty of room for it to run hotter. Sitting still is the worst case senerio so what does it run at on the road? __________________ 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.



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