Electric fan setup question
Thread Starter
Le Mans Master
Joined: Nov 2004
Posts: 6,128
Likes: 21
From: North Alabama
Electric fan setup question
Got a set of electric fans and shroud from a 2000 SS Camaro with a 350. Fits perfect with very little trimming and fabrication. I have a question that 2 friends are giving different answers to. Should I use a thermal switched thermostat mounted on the radiator tank to operate them or should I use a thermostat reading the water temp somewhere on the motor? One says (the one saying I should mount it on the motor somewhere reading water temp) I should use a thermostat on the motor with a higher setting than the 190 degree mechanical one in my water outlet. The other guy (the one that says I should use a thermal switched one on the radiator) says I should use a lower temp one than the mechanical one. Need help! What has worked best for you all? Thanks
Safety Car
Joined: Jul 2002
Posts: 4,269
Likes: 3
From: St. Charles IL
Cruise-In 5-6-7-8-9-11-12 Veteran
A CI-6 Car Show Winner
I would run one in the radiator, but it should switch a relay coil, not direct power to the fans. I believe the fans draw too much current for a thermal switch to handle without a relay. Reason I think the radiator would be best is you will still have the thermostat in the water neck to control engine temperature.
Burning Brakes
Joined: Oct 2004
Posts: 1,038
Likes: 0
From: Grants Pass Oregon
Thermostat
If your block doesn't have one, any other 350 of the 70's , 80's ilk will. Look in your engine compartment on the drivers side between port one and two of your exhaust manifold or header pack. You will find screwed into the block a brass fitting , probably with a single wire attatched via a clip to the end point of it. This wire goes to your temp gauge. This is a brass thermistat screwed directly into your water jacket at one of the hottest points in the block..........Use that! You can buy duel connectors for this purpose, check the Zone. 
