I read a few threads here and am fairly confident I have a 1973 361. It is in an F600 of same year. Truck has only had 3 owners, myself being 3rd. I know both previous owners so to my knowledge the engine is original to the truck. The truck was running hot last weekend whic it has never done in the past. Radiator is about 10 yrs old and still looks new on the outside but it was corroded inside probably from lack of use. I yanked it and sent it out for a good boil. In the meantime decided to change the Tstat. It appears to me to only have 1 and from what I read here should have 2 ?? Also there is a bypass from the water pump housing to the tstat housing and to me it seems I should have a tstat cable of covering the hole unless cold ?? I have no idea what the original tstat looked like as the one I removed was aftermarket and a 195(too hot for this truck). The water pump was a PIA to track down as well as NAPA only showed the 4 bolt one(looks similar to a SBC. After an hour of pourig through pics and trying different applications I came up with NAPA TFW 44005 as being the correct one new. It was 80$ and NAPA is reboxed Gates so I looked up Gates 44005 on Rockauto and got it for 48$. It is the correct one . Now I have to figure out which thermostat belongs in it ??

 

Contact NumberDummy about the T-Stat. You will have to
e-mail him as his PM's are off. Also post up the tags and numbers
from the door post with the vin number. This will tell ND what the
truck was equipped with when new.
And we all like pic's.

Here is how to post pic's on FTE

https://www.ford-trucks.com/forums/1...ure-guide.html

Here is one way by "Axracer"

Do you have digital pix of your truck from digital camera or phone on your computer? If so it is easy to add them to a post (assuming the file is not too large). Find the pic on your computer and leave it open while you come here in another window. Compose a post, click where you want the pic to appear in the post. Click on the picture icon at the top of the posting box (looks like a postcard with mountains and sun) A dialog box will open asking if you want to drag a pic onto the box or browse your computer to find it. If you have the pic open, go there, right click anywhere on the pic and chose copy from the menu. Come back to your post and right click on the box. Select paste from the menu. Your picture should appear (it may take a few seconds to load) in the box. Now left click on the insert button.
If the stars all aligned your picture should now be in your post window. Select post to have it appear on the forum or repeat to add more pix. Some cameras make huge files these days that are larger than the forum limits. You may need to resize or resample the picture and save the smaller file version with whatever picture editing software came with your picture taking device before you can post it.

Oh! and welcome to FTE and the old truck madness.

 

No prob. I can post pics later. Not on my home PC where I have them.
Was gonna put up some pics of the waterpump too so anyone looking for one can have the current part number. It took me awhile to find it. I have nothing but old iron so I have learned patience with part hunting.

 

ok, maybe I was wrong. Closer look maybe there was "supposed" to be another tStat at the intake ??

 

There is only 1 thermostat. There are two housings, upper (C8TZ-8592-B) and lower (D0TZ-8592-A), but only the upper housing has a thermostat.

DOTZ-8575-A .. 175 degree Thermostat (Motorcraft RT-147) / Available from Ford ~ MSRP: $17.56.

Applications: 1970/78 F500/750 with 361 & 391 FT engines.

btw: Please post further questions in the Large Truck forum. Most of the members of this forum have F100/350's, won't know that much about 500 and larger series trucks.

 

Thank you very much. I will post in the other forum. When I had searched it originally it had brought me here so I missed that one. If a staff member could move this to that forum ?
Now I can get this thing back together. Thank you very much.

 

BTW I googled the thermostat part number you posted and as I suspected it does have a blockoff for the bypass so this truck had the incorrect Tstat which probably contributed to running hot as some coolant was being directed around the radiator.

 

It crosses directy to NAPA THM 195 which NAPA is calling a 180...Hmm.... Will be in later as no one had it in stock but looks right in the pics...Very happy.....

 

A word of warning. The Gates water pump was basically correct but like all made in (insert third world country) it was not cast right. I'll post pics later but the waterpump pulley hit the waterpump housing. I did some quick measurements to make sure it the pulley flange was pressed on to the proper height. The water pump was about 1/16 thicker than the old one. I ground it down. Other than that the truck is back on it's feet and seems to be running cooler. Still putting it back together as I took the noseclip off

 

For some reason my 361 has two thermostats side by side, would they use the RT147? It looks a bit different from the ones I've got
Thanks!

 

I hate revamping such an old thread, but there are actually 2 water pumps for the FT engines. The difference is in the pulley depth. I ran into this with a 1976 New Holland Bale Wagon when ordering a new water pump from NAPA. I had the exact issue you described, except I had to space the pulley forward to keep the belt grooves lined up. I ended up finding the correct water pump on rockauto while looking for a new pulley because mine cracked out around the mounting holes. I don't have any part numbers handy, but I can get them if someone needs them. I have the pulley numbers and the water pump numbers written down somewhere