65 water pump

[jbadams]

I pulled the water pump off of my 65 Belvedere because one of the pulley bolt hole threads is messed up and I had another water pump sitting on the shelf. Which water pump is correct for 65?
2848290 or 3671083.

3671083 is the one I pulled off and has the messed up bolt hole threads. The water pump housing is correct I think.

Is one of these better at cooling than the other?

Can I just cleanup the bolt hole or send it off to be refurbished? I know I can get a new replacement but want to stick with original if I can.

 

[pnora]

I pulled the water pump off of my 65 Belvedere because one of the pulley bolt hole threads is messed up and I had another water pump sitting on the shelf. Which water pump is correct for 65?
2848290 or 3671083.

3671083 is the one I pulled off and has the messed up bolt hole threads. The water pump housing is correct I think.

Is one of these better at cooling than the other?

Can I just cleanup the bolt hole or send it off to be refurbished? I know I can get a new replacement but want to stick with original if I can.

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3671083 Is a newer pump. Most likely made in the mid 70's. The 2848290 is most likely more period correct for your car.

 

[rickseeman]

That number (2848290) is later than 65 also. Probably been replaced over the years. Keep looking. They are out there. Housing looks like a proper number, just guessing.

 

[HALIFAXHOPS]

Go int the IPB and you can get the right number. Mymopar has them to download.

 

[Dave6T4]

My rule of thumb when reading Mopar part #'s: first #; 2 = 1960's; 3 = 1970's
second #; 8 = aproxiamate year of manufacture (+/- one year)
For your water pump, you would want something starting 24..... , or 25.....

 

[pnora]

From the 65 parts manual.

 

[Dave6T4]

Geez. I called that one.

 

[RemCharger]

Well lookee there... the Hemi uses an A/C pump....

 

[Dave6T4]

On non-Hemi big blocks, the water pump pullies are different diameters between A/C and non-A/C, so the impeller runs at different speeds. A/C water pump has less vanes, to pump equivalent volume of water at higher shaft speed, as regular pump with larger pulley. Putting an A/C water pump on a non-A/C car with a larger diameter pump pulley would reduce the volume of coolant being moved through the radiator,and could cause cooling problems.

 

[Sixpactogo]

Can I just cleanup the bolt hole or send it off to be refurbished? I know I can get a new replacement but want to stick with original if I can.

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To answer your question......I would run a tap thru those threads and put it back on till it starts leaking out that weep hole.

 

[rickseeman]

My rule of thumb when reading Mopar part #'s: first #; 2 = 1960's; 3 = 1970's
second #; 8 = aproxiamate year of manufacture (+/- one year)
For your water pump, you would want something starting 24..... , or 25.....

Yes, but it's the year that the casting or part number was designed for. So (for instance) if that casting was first used in a 62 model then the number would start with a 22. But it would probably be used for many years before a design change was necessary.