Someone swapped a 1954 passenger car engine into my 1948 Chevy 3100 prior to me acquiring it. I'm trying to identify the carburetor it has so I can order a rebuild kit, because the carb is leaking and I have a tip-in hesitation issue (like the accelerator pump is not working properly). It looks like the GM Model "B" Carburetor shown in the 1948-53 shop manual, but the shop manual doesn't mention that the Model B carb even has an accelerator pump.

See attached pics.
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20240916_205839.jpg (109.81 KB, 133 downloads)
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20240916_205905.jpg (97.96 KB, 129 downloads)


1948 Chevy 3100 Thriftmaster pickup
Old skool engine swap ('54 pass 235)
Four on the floor
12v conversion