Carter WA-1 Carburetor Catalog

Carter WA-1 Carburetor Manual

Identification – when no tag is present.

You can sometimes identify a WA-1 carburetor using the casting number, which is found on the throttle body. This is not definitive, but should get you close enough to get the correct carburetor kit.

Casting Number Carburetor Number Application
154 433s Pontiac
194 425s, 466s, 467s Oldsmobile
223 413s, 416s Universal
243 426s Oldsmobile
245 432s, 463s Pontiac
253 435s Nash
288 462s Pontiac 8
290 464s, 683s Nash
298 454s Hudson
298 611s, 662s, 694s Nash
309 622s Frazer
317 530s Packard
332 477s Packard
340 481s, 504s, 508s, 764s, 765s Oldsmobile
348 494s Pontiac 6
356 496s Studebaker
368 493s Pontiac
388 537s, 717s Pontiac
485 613s, 645s Willys
538 651s, 709s, 710s, 763s Oldsmobile
592 652s, 718s Pontiac
679 746s Nash
682 749s, 755s Hudson
779 780s Nash
825 843s Volvo
910 968s, 2113s Hudson
972 990s, 2009s, 2043s, 2114s Hudson
1002 2013s Hudson

Find the carburetor kit by entering the carburetor number in the search box.


Does my WA-1 need a check ball in the bottom of the accelerator pump well?

Depends. A check ball is used to plug the inlet hole when the pump is going down and forcing fuel out of the main discharge. If the inlet hole isn’t plugged, then the fuel would go back into the float bowl and not out the main discharge. You need to determine if there is an inlet hole for fuel to enter. In this case there would be 2 holes. One on the very bottom would be the inlet and there would be a trough for the check ball to sit. There would also be a 2nd hole for the discharge. The discharge hole would usually be up the side of the well close to the bottom. The well of this type would also have a split part way down the accelerator pump well which accommodates the intake of fuel.