I have a 1961 292 out of a galaxie that I am putting into a 1954 F250 to replace the original 239. I am shopping for a water pump and there are different part numbers for car and truck pumps. I have looked at pictures on the parts houses web sites, but I don't really see much difference.

I am planning on mounting the fan on the waterpump and using a 1956 style shroud (when I find one).

The water pump that was on the galaxie has a 2" inlet, but the 1954 radiator has a 1.75" outlet. I am concerned about finding a hose to fit.

Does anyone know if a 1956 truck water pump has a 2" inlet?

Can anyone shed some light on this situation? Thanks in advance for your replies.

Kevin <!-- User Agent = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0) -->

 

Kevin,

The truck pump has the boss for the high fan, which you aren't using. I believe there has been some variations over the years in outlet sizes, but I only have truck pumps to look at right now & mine are all identical @ 1 3/4" OD (dunno the original years...).

A lot of times, you can find a combination hose to fit, if you can get the parts guy to let you look at the Gates or Dayco book; they list them. Also, it's been a while, but not too long ago I saw adapters/reducers for this kind of problem- again, check the book, don't take the parts guy's word for it. I have also seen a 2" hose put over a short piece of 1 3/4" hose on the outlet, using two clamps. Cootie-bobbing at its best!

You can always get a different outlet put into the radiator, if worst comes to worst.

 

The OE 56 pump I am looking at has a 2 inch OD inlet. Radiator hose reducer bushings should be readily available at a good parts outlet (maybe not Autozone).
The car pumps have a smaller diameter impeller shaft than the truck pumps, so they use a pulley with the appropriate center hole. Car pulleys are slightly larger in diameter than truck pulleys, so water pump rpm is somewhat reduced. The car pulley also uses the narrow belt. I am using an automotive pump and there hasnt been a problem with it.

 

i have been looking for pumps too. cars or truck version that do not have the mount for the fan can have two different size shafts as well.( can not remember the sizes off my head) Also on my pump it is the high mount fan but had a press on pulley. After calling and emailing A-1 Cardon( I work For Advance Auto Parts and that is where our rebuilt pumps come from< maybe Napa too) And various vendors and other part places they all said my pump was non existance because the pully is cast and pressed on the impeller shaft. ( did find one pump but at 100 bucks i looked for differnet options) I finally made it to the junk yard and got a pully of a 56 F600 with a high mount fan and a bolt on pully. That is how the repalcement pumps now come that i could find. As for water outlet size I can not help yah. But good luck. and keep in mind the shaft sizes.

 

The 1954 water pumps are different from all later ones: they are smaller.

In 1954, a car pump will interchange with a truck pump, altho you will have issues regarding the fan, of course.

Neither the later car or truck pump can be used on 1954 engines, because they are bigger.

The difference is also reflected in the timing cover, to which the pump mounts.

If you have a later timing cover, you can use the big pump. If you have a 1954 timing cover, you must use the 1954 pump. But big or small, truck and car pumps will interchange between each other, but not between big and small.

If you have a small pump timing cover (it may have been changed -- you can tell by whether the fuel pump is mounted upside down, which is an old, small cover, or right side up), you can interchange it for a big one. You will need to use a different fuel pump. Also, make sure you get a truck cover, because the lower bolt bosses are extended for the front truck motor mount.