I own a 1968 el camino with a full roller 396. The cooling system needs serious help before I put it on the road during the summer heat. I have two electric fans (average size). I'm not exactly sure how to attach them to the radiator? Does anyone have a good blueprint to put a electric fan on a 68-72 elky/chevelle? Thanks, Elcoman68

What is this doing in a regional forum?

I am in the process of doing the same on a '68 with a 396, and while your fans are likely very different I will share my expected setup.

I started with a double fan setup from a very late Ford Taurus (I know *FORD?*). These fans mount on a flat plate with a three point mount, so they looked easy to get mounted. Also at 14" and 13" they cover the whole radiator side to side. Easy to mount, good coverage, who cares if they come out of a Ford?

From there the project grew because my daily driver is a 2001 Mustang and my service manual also has the 2001 Taurus on it. So I checked out the factory fan wiring setup. Ford used 3 relays for high and low speeds and fan brake on a 40A fused circuit. The low speed was handled through a simple resistor lowering the voltage. Further the fuse and relays were contained in the Taurus battery junction box in one tidy package.

Well that all sounded interesting, so off I went to extract a battery junction box and as much of the front end wiring harness from a Taurus as I could get. After about 2 hours of pulling wiring out I found the resistor hiding out in the passenger fender well.

I still have to sort out the final electrical setup which I will do somewhat as I install it.

For mounting the fans I have constructed an aluminum sheet with 1/2" bent flanges so it is like a very shallow box. This will bolt to the top radiator and bottom core supports. The flange edges will be covered with slit tubing to protect the radiator from rubbing.

The thermal fan switch I am using is spec'd for a 1990 Camaro V8. It requires a special connector which is available but expensive. I would probably look for something cheaper if I did it again. I think this is a grounding on switch, which will work perfectly with the fan control relays. I plan to hook up the thermal switch to the high speed fan relay. The low speed will be available in the future for A/C hookup.

This is not the simplest setup... but if you want to duplicate it look for a roly poly Taurus as the donor. And if someone has already stripped the fuses/relays from the battery junction box, check out the inside fuse panel for relays and prior generation Taurus for the maxi-fuse modules.

Steve