ps to last post 2 plus 1=3 early 54pumps latter car and then truck= 3  the truck 1 i have is casting#is c3te then below 8505-a so more confusion,atleast in my world.

yuo are correct, the truch 1 will bolt to the front cover of truck and car (just tryed it,the 3 gaskets in my oh kit (2 are then same,3rd for early 54s) in my case the impelors ar different,tho cant see that 1 is better than the other. cant see much diference in front covers ,except  truck has a pad for high mount fan or??.

There are 2 basic types of water pump for Y's not counting something odd of early '54's.  Here is a side by side pic of both of them.   The older one is a pass car pump. The new one is a HD truck pump with a larger shaft.  It also has larger bearings and a stronger casting with gussets to support the bearings.  However it will bolt to any front cover.  I think that most light duty trucks had the pass car type pump not the HD one.


Doug T

The Highlands, Louisville, Ky.

there ar 3 that i am aware of small 1954,then car one 55-/to last build, then truck one. have 2 engines apart in my shop,1 truck which has a different front cover 2nd car type. also the oh gasket kit has 3 water pump gaskets.. there ar several different impelors for the last 2types.the truck ones have the large shaft and won't fit the car front cover. hope this helps . cliff

I agree you need to check your block numbers. Both of my 1956 272 blocks have the same pump with the larger shaft. The parts store (O'reilly auto parts I believe) pulled up the right part the first try. Same part number that is on my pump.

Try this site for the block numbers:

http://www.ford-y-block.com/Block%20identification.htm


'56 F-100 272 Y-block, 3 speed. 

I think the smaller one is '54 only, but definitely an earlier pump.  Since that's what you removed, you might want to check the casting numbers on the block and head to determine what you have as many early parts do not interchange with the later stuff.  At this point, any Y block or combination of parts can be in your truck.



Lawrenceville, GA

I recently had to replace my waterpump, so I ordered one for a 1956 272 with a 5/8 shaft.( front of photo) The one they sent me. looks close but it is not the same. So, can anyone tell me what pump do I have, and what is the one at back of photo? Thank's