Thermostat housing with sensor hole?

Hey guys, I'm going to run electric fans on my 455. I'd like to keep the dummy light switch in the stock intake and run the electric fan sensor in the thermostat housing (upper radiator hose neck housing).

Has anyone done this? If so, what housing did you use? Do they make one that fits the 455?

Thanks,

 

Going along for the ride.

 

The stock as well as Performer intakes have at least three holes for access to the water passage. One is for the idiot light and/or a gauge and the other two are for heater outlet and return. Why not use one of them instead of the goose neck? You could drill and tap a fitting in one of them.

 

I'll have to take another look for another location. My apologies, but I didn't mention that it's a 67 gs400 intake, so that might make a difference.

 

My response applies to any 400/430/455 intake.

 

Got it, thanks.

 

I had a 1/2 npt bung welded onto the t-stat housing on my duramax. I needed a place for the sender for the temp gauge when i did the square body swap. It was no big deal at all. The bung was 5 bucks and it welded right up.

 

I’d like another as well. I’d like to run 2 different temp sending units for two electric fans as well as a gauge sensor.

 

I've got my old water neck. I plan on tapping it for a sender. I'll let you know how it turns out. Might try it this weekend.

 

Just saw this looks like an answer to our questions

 

I’ve only ever seen those for chevys and they don’t list the specs of them. I’ve never owned an sbc so not sure if the water neck is the same shape or not.

 

Unless you used one of the holes for a bypass. Seems like a lot of money and time just to add a sensor hole though. I may just drill and tap my intake manifold for another.

 

Again you'll need to add a bung. There is not enough meat to just drill and tap, especially on the t-stat housing. It's not hard and shouldn't cost more than 25 bucks at the welders shop.


https://www.summitracing.com/parts/sum-220073

 

If adding a bung to the housing will have enough room in the housing for the probe. I would think one made for the Buick would be easy peasy.

 

Could always drill and tap the intake manifold

 

These are readily available and cheap. Lots of different size piping available. No machining required, just cut a small portion of upper radiator hose & clamp this in. Simple & effective.

 

This would not work for a CTS that is part of an efi system. It would wreak havoc on warmup. It would be ok for a fan switch though.

 

The need for an additional port is on the engine side of the thermostat, not the radiator side.