Electric Fan Recommendation for 1992 Chevy C-1500 5.7L V8 engine

Updated 07/17/2018 | Published 07/16/2018

Question:

I have a 1992 Chevy C-1500 extended cab Silverado pickup with a gas 5.7L V8 engine that I use for pulling an old 24 foot Coachman camp trailer. It routinely overheats at slow speeds when parking, pulling a long grade, or at stops. It has an aftermarket trans. cooler mounted on the inside of the radiator, between the radiator and the motor. The existing stock fan is belt driven with a standard OEM thermal clutch. What are your recommendations for improving the cooling in order to prevent overheating? Thanks for your help.

asked by: Brad B

Expert Reply:

The issue is your engine is not getting enough air most likely due to the location of the transmission cooler. The best location to place that transmission cooler is in front of the radiator, but when you aren't moving very fast it is still not going to move any more air, so a fan is your best option to prevent overheating.

You have a couple of options. The first option is to add an electric radiator fan to the truck to move more air as needed. I'd add the biggest fan you can fit, so I've linked the page to all your options. Then you can use the Derale Premium, Single-Stage Thermostat Fan Control with Dual Probes - 180 Degrees # D16735 to make sure the fan turns on when needed.

The second option is to remove your current transmission cooler and replace it with a remote cooler that has a fan. This will move the transmission cooler from behind your radiator and allow you to mount it anywhere because it will have a fan to ensure function. This will let the air flow to your engine and still allow the transmission fluid to be cooled in another location. For that option, I recommend the Derale Dyno-Cool Remote Cooler with Fan and Hose Barb Inlets - Class IV # D12743.

expert reply by: Jason S