Temperature Sending Unit Location

[money pit]

I have a 70 Barracuda I bought a few weeks ago. It has a 340 with a 727 trans. I want to add an electric fan and in the future EFI. I noticed there isn't any where to add the temp sensors. There is only the stock temp sending unit on the intake manifold. Is there some where on the engine block I can use? Anyone have any recommendations?

 

[Adam]

Buy a sending unit for an electric fan, then splice the wires or add a connector to run your temp gauge.
If you buy a new fan set up it will likely have a sender included; these usually are temp rated. Also, you should definitely run the fan(s) off a relay(s). The wiring is super simple for a four pin relay.

How To Properly Wire Electric Cooling Fans

shop.championcooling.com

 

[money pit]

Buy a sending unit for an electric fan, then splice the wires or add a connector to run your temp gauge.
If you buy a new fan set up it will likely have a sender included; these usually are temp rated. Also, you should definitely run the fan(s) off a relay(s). The wiring is super simple for a four pin relay.

http://[URL]https://shop.championcooling.com/articles/Relay-Wiring

[/URL]

I found an adaptor that will allow you to install 3 sending units to one outlet. I have the relays and plan on setting up the fans soon. Thanks

 

[Steve340]

If you have a heater you could tap in to the hot water "out" of the engine.
Those sensors work better if they are in water flow - not a dead end.
A dead end can trap an air bubble and the sensor may not work very well.

 

[Katfish]

You can add a spacer under the thermostat that has ports for temp sensors.

DODGE Meziere Enterprises WN0028S Meziere Water Neck Spacers | Summit Racing

 

[rklein71]

I welded a bung on a slightly longer bypass outlet for my sensor.

 

[Challenger RTA]

How can you go wrong by asking a question here! You get more then one good answer! Very innovative members here!

 

[Chryco Psycho]

I would drill & tap into the manifold or weld on a bung if the casting was too thin

 

[money pit]

You can add a spacer under the thermostat that has ports for temp sensors.

DODGE Meziere Enterprises WN0028S Meziere Water Neck Spacers | Summit Racing

I saw this on the Summit Racing website. The application indicated it would fit a big block. I submitted a question to Summit to see it it will fit a small block. I haven't gotten a response. Do you know if a big block and small block thermostat housing is the same? Thanks

 

[Chryco Psycho]

They are different

 

[rklein71]

I would drill & tap into the manifold or weld on a bung if the casting was too thin

In my case, I had a LD340 intake with a Mopar part number on it and I really didn't want to modify it, hence the bung welded on the bypass outlet pipe.

 

[money pit]

In my case, I had a LD340 intake with a Mopar part number on it and I really didn't want to modify it, hence the bung welded on the bypass outlet pipe.

I see. I have the same situation. Thanks