Chris'69Mach 23 Report post Posted November 11, 2014 Add a second coolant temperature sensor on a 351c. I have installed an electric fan with "Painless" temperature sensor and wiring harness. It has 2 male leads on the sensor. One being used for a ground and the other goes to a relay to turn on and off the fan at temp. Do I add a "T" fitting to one of the heater hoses and use that for my dash temp gage? Or is there a better solution. If I were to install a "T" fitting, does anyone have a suggestion for what I need? Or is there somewhere else on the block that I can install the 2nd sensor? Chris Quote Share this post Link to post Share on other sites
j69302 11 Report post Posted November 12, 2014 (edited) Get this thermostat housing http://www.summitracing.com/parts/fss-84868/overview/make/ford (Double check to make sure that will fit, I searched for 351 C but in the "applications" tab, it says it fits Windsor, cleveland, and 385 big block series.) There are also different designs with fittings in them. Just stay away from the chromed, O-RING style housings. They will warp, they will leak. Stay with cast iron, cast aluminum, or billet(if you feel like throwing away money on something over priced) It will only read once the thermostat opens, but that shouldnt cause a problem as the fan should turn off before the thermostat closes again. You can also install the fans sensor in place of the stock sensor, and move your stock sensor to the thermostat. Dont use a T fitting as most temp sensor wont be deep enough in the t fitting to have any coolant flow across it for accurate readings. Edited November 12, 2014 by j69302 Quote Share this post Link to post Share on other sites
Chris'69Mach 23 Report post Posted November 14, 2014 There is a plug on the waterpump. Can I use that for the electric fan's relay? Quote Share this post Link to post Share on other sites
miketyler 15 Report post Posted November 14, 2014 Yes, thats where I put mine. Works fine there. Quote Share this post Link to post Share on other sites
Chris'69Mach 23 Report post Posted November 14, 2014 Yes, thats where I put mine. Works fine there. :clap: I was getting worried that I wold have to fabricate something. Thanks Mike !! Quote Share this post Link to post Share on other sites
miketyler 15 Report post Posted November 14, 2014 No worries - I also bought a nifty fused relay block that mounts on the fender well that regulates power to it. Very clean look for cheap. I am running a low profile Spal pusher in between the radiator and the condenser. It is a close fit. You probably already know this but you definitely want to run any electric fan loads thru a relay. Quote Share this post Link to post Share on other sites
