Ok, here is the thing. I have the dual electric fan setup out of another car and have them physically mounted on my car. My car didnt origionally have electric fans so it didnt have the switch. It did however have the hole in the head where it would normally go. Well... It had a plug in it that had some square spot in it that looked like it would take like a 5/16(or metric in similar size) square driver of some sort. Well I had a friend ask the snap on man and one of the other tool guys at work and they said that they couldnt get them and sears didnt cary them. I tried to get it out with vice grips but it just broke. It is still plugging the whole but I would probably have to pull the motor and drill it to get it out. So, now I am looking at other locations. I have an lg4 alum intake manifold. I was looking, and there are 3 holes which it fits(unfortunatly they are all used) They are 2 in the thermostat housing(one sensor and one vac switch), and one in the intake manifold which is another vacume switch(this one happens to be broken). My first question is would any of these spots work? Specifically the ones with the vacume switches. The one in the manifold has been broken since I had the 305 and was bypassed but if it is important I would like to replace it(tried before but couldnt find what I needed at the parts store). Anyway, does anyone know what these vacume switches do? Also, if any of these places are feasable would it affect them to put a piece on them to y it so that I could keep the stock stuff and also connect the fan switch? I was searching the site and found where someone had found a stand alone kit that put it in between a couple of pieces of radiator line or something and came with a relay and such to make an electric fan work on a car that didnt have one origionally and it was supposed to be adjust able for what temps you wanted it to come on at. Does anyone know where I could find something like that?

Thanks

Ben

 

Ok, I just figured out that I can use either hole because with some of the stuff I am going to be getting rid of They will not be used. Which would be better? The one in the intake or the one in the t-stat housing. I would guess the one in the intake.

Thanks

Ben

 

actually they say the best place for the fan switch is in the passenger side head toward the rear of the head. supposedly this is the hottest place on the engine. Cast Iron hold heat more so than al and the intake is al so for the more accurate temp for the engine would probably be in the head. If you are looking for the kit to do it Summitt has a kit by painless wiring. They are not that expensive 35 to 75 dollars. They come with all the instructions too.

 

I know the head is the best spot but as I stated in my first post There is a plug in the head that is now broken to the point it would have to be drilled out and I dont thing I could fit a drill down in there to take it out. Where does the sensor from this kit go?

Ben

 

I found the one on summit and the cheaper ones are just to go in the stock system to add a switch and the more expensive still use the stock head location for the sensor.

Ben

 

If you cant get the plug out, I am sure you could use the drivers side hole in the head for the fan switch and put the engine tem unit on the intake. Or Hayden makes a kit with a probe that sticks in between the cooling fins of the radiator. Kind of cheap looking though but works the same

 

Well, I plan on making one of the fans manual so I would like my temp sensor to be acurate so I can see if it is getting to hot with just the automatic one. How far off will the temp be in the intake compared to the head? I know that the part that is supposed to actually read the temp sticks out into the coolant flow, but I am sure heat is transfered from where the threads are to an extent, but how much I dont know. Also, coming out of teh intake would be the last place the coolant goes before it re enters the radiator right. This would in turn probably be the hottest area of coolant so(in my thinking anyway) would this makeup somewhat for the difference between the iron and aluminum threaded areas?

Ben