Rochester identified their carbs with a foil tag attached to the top with one of the hold down screws. Very easily ripped or forgotten after a rebuild.

Some of the carbs were stamped in addition to the tag on the underside of the carb. I got lucky and mine was stamped. Its the four digit number on the right.

Good Luck!
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Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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