I have a hemi in My 67 coronet and have an aftermarket temp gauge that is connected into the water pump housing next to the heater core in/outlets. I want to go to an electric fan setup and keep the aftermarket setup as is but need a suggestion on where to install the electric fan temp probe. I see Chevy has a thermostat housing for small blocks that has a port for a probe. Is there one available for BB mopars ? It was suggested to install the probe in the rad fins. (not real enthused about that) My radiator is aluminum aftermarket Champion. Thanks in advance to all. Thanks Moparts

Here you go. efi t-stat adp.

Thank you for posting that. My plugs in the housing are so corroded that it would require a torch by all the perfect stuff in my engine bay. Should be able to slip this in and use an aftermarket gauge. I don’t trust the factory one all that much.

That is way to cool !!!! Thank You very much

I'm looking on line and there is a housing with a port to accept the probe and it says compatable for BB mopars and smallblock chevy. Anyone see something like this?

Shouldn't be to hard to find, The mancini piece is nice but bend me over rover LOL .

Speedway, jeg's Summit, circle track, Ebay AND Amz.

the chevy housing has the same bolt spacing, but is a slightly different shape, and may or may not fit the thermostat [correctly].
i fiddled some with a spacer used on a chevy dirt track car, and while it fit on a big block water pump housing, it was a shape that looked odd on there, [at least to me] and required the bottom of the spacer to be machined to accept the big block thermostat. the chevy thermostat will fall through the big block housing, as it's the small size similar to the later small block and magnum size thermostats.

It’s only $15 more than the Meziere I use, and I would have gladly paid that for the better positioning of the sensor

Flex a lite makes a fan controller with a probe you put in the rad hose by the radiator. You also can adjust what temp you want the fan to come on at.
link

I looked at them, the do not make an in the hose probe.

They make two types, in the fins and a thread in sensor set up.

I am using the adaptor that Mancini sells on my 440 based 511. AndyF makes it. It is a high quality piece. I'm using it to provide a place for a zinc anode to protect the aluminum heads, water pump housing, and radiator. It doesn't stand out, looks wise.
I have got to the point that I realize that parts that are made for our old mopars are going to be expensive, so if I think I need it, I bite the bullet and buy it and don't look back.

Well they used to because i have one. The kit comes with a piece of tapered rubber you put on the probe so the clamp doesn't crush it(inside the hose at the upper rad inlet). They may not make it anymore but you should be able to adapt one to work. Here is one but not flex a lite.
link

I never liked that shove the probe into the hose method. Crude and rude to me.

I would worry about the probe / wires eventually failing as well as leakage. One could easily use a TEE in the heater hose supply side. Another option that may be possible is to drill another port ahead of the factory temp sender depending on the size of probe and available material

Terzmo the poster of this thread has a Hemi engine and needs to oil his wallet so it does not squeak when he pulls the 45 Washingtons out. The spacer is a neat way to get it done. My Mancini housing had extra ports. The factory housing or his housing might be able to be drilled and tapped.

Probably a reason they don't make it any more.

Yea mine was a pain to get is sealed but after you do it's good. Getting the temp from engine is not ideal because the thermostat will be closed until it reaches the opening temp then it circulates the coolant threw the radiator. If the temp(on the controller) is lower than the opening of the t stat it will turn on the fans when the coolant is not being circulated(threw the radiator). Getting the reading from the circulated coolant is more accurate. Putting the sensor in the cooling fins should work but getting the temp direct from the coolant would be better. If i where to do this again i would opt for a controller that uses a thermistor sensor rather than a mechanical thermostat. This one just happened to come with the fan.

You'd be much better off putting your temperature sensor where the coolant enters the block. That way you are using the OUPUT of the radiator to control the fan. That is how it is on my 1 Plymouth when I converted it over.

It is also how the OEM's have done it for years. Which to clarify, is on the engine side of the T'stat not the radiator side. This will give you the most accurate reading of the engine temp.
Putting it anywhere else can be misleading/ disastrous if the thermostat malfunctions as you would then be reading the radiator coolant temp not the engine temp.
Spal sells 2 preset sensors that I have had very good luck with. They can be used with normal 5 pin relay (available anywhere).
they control the fans by grounding the relay coil. I have new ones still in the packaging, If anyone is interested PM me

TS-185 it turns on at 185 and of at 165, I have One
TS-195 it turns on at 195 and off at 175, I have 2 or 3
Pretty sure I even have a few or their wiring kits. if anyone is interested PM me

i agree the temperature sender or probe needs to be after the radiator, and preferably in the water jacket around the cylinders.
a good place [in my opinion] would be where the block drain plug is located.
i am also a guy that likes to see the engine temperature at, or around, 195-215 or so. this is with a 16lb or higher [20-22lb dirt track radiator cap] radiator cap, and a 35-50% mix of water and coolant.
i think the extra heat produces a tick more oomph from the engine, as well as making sure all acids and moisture's are boiled out of the block internals.
remember, this is just my [old man] opinion.
your mileage will vary.