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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Jul 21st, 2025 | | | | Joined: May 2015 Posts: 39 'Bolter | | 'Bolter Joined: May 2015 Posts: 39 | The water pump, which I believe is original, on my 1954 Chev 235 Hydra-Matic pickup has a casting number of
"GM 2932 A" under the pulley on the ramp of the housing. There are no other numbers on the body. Generally, I see early 1950s 216/235 water pumps with the casting number "839403" on the radiator hose inlet. Can anyone shed some light on my pump number? | | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | The water pump body would be 839403 for probably 1941-through 1955-1st series (small Chevrolet trucks, at least).
What is the size of the pulley groove?
1953 through 1955-1st had a 3/8" groove
Different groove sizes and pulley diameters were used in different years and on car vs trucks.
Maybe someone knows GM 2932 A? | | | | | Joined: May 2015 Posts: 39 'Bolter | | 'Bolter Joined: May 2015 Posts: 39 | It does have a 3/8" pulley groove | | |
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