The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**clay68c10** · 05-23-2017, 10:28 PM

More fan will definitely help. My old 68 454 truck would run at 205 all summer long in Dallas with the a/c on, in traffic for extended periods of time.
I was running a stock 4 core radiator and the stock condenser with 134. I had a Lincoln MK8 electric fan with a PWM controller. Worth every penny.
I did a heat soak test once, it was 105 and I just got off the highway with the ac on. Shut the engine off and watched the temp peak out at 240. I started it up, idled with the ac on, and it steadily dropped back down to 205 in a couple of minutes.
That fan could move ALOT of air at full blast.

05-23-2017, 10:28 PM	#15
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,896	Re: Could my AC be overheating my truck? More fan will definitely help. My old 68 454 truck would run at 205 all summer long in Dallas with the a/c on, in traffic for extended periods of time. I was running a stock 4 core radiator and the stock condenser with 134. I had a Lincoln MK8 electric fan with a PWM controller. Worth every penny. I did a heat soak test once, it was 105 and I just got off the highway with the ac on. Shut the engine off and watched the temp peak out at 240. I started it up, idled with the ac on, and it steadily dropped back down to 205 in a couple of minutes. That fan could move ALOT of air at full blast. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ