AC Fuel pump ID help

[Brian K.]

I was going thru some of my Dad's old vette parts looking for a 40083 pump (which I found) and found three other AC pumps 4346 (is this a 57 pump?) 4663 (what is it?) and 4701 (whats this?) thanks for any help. Sincerely Brian Kotula

[Joe L.]

Re: AC Fuel pump ID help

Brian-----

AC #4346 is applicable to late 1956 Corvettes and all 1957 Corvettes. It's also applicable to 1956-57 passenger cars with dual 4 barrel carb or FI.

AC #4663 is applicable to 1956-58 Corvettes as well as the same passnger car applications I described above. It may be SERVICE-only, though. I can't confirm that it was used in PRODUCTION.

AC #4701 is applicable to 1959-63 passenger cars with 283.

[Joseph T.]

Re: AC Fuel pump 4346

Brian..the 4346 is very desirable...Joe

[Chuck S.]

Re: AC Fuel pump ID help

Joe, are those the full AC numbers, or is each the last four digits of a longer number? When did AC go to five digit part numbers? Did AC ever have a #6106 in their catalog?

[Joe L.]

Re: AC Fuel pump ID help

Chuck------

Those are the full AC part numbers. Many earlier AC fuel pumps used 4 digit AC part numbers. All had 7 digit GM part numbers, though. The change to 5 digit AC part numbers began APPROXIMATELY 1965, although there was a phase-in period for several years thereafter. I believe that the first Corvette fuel pump to go to a 5 digit AC part number was the 40083. I can't find any record of a 6106, but there may have been such a pump.

[Brian K.]

Re: AC Fuel pump ID help

Thanks a lot Joe for the super fast help in identifing these for me. Sincerely Brian Kotula

[Chuck S.]

Thanks, Joe *NM*

[Bernard M.]

Re: AC Fuel pump ID help

Chuck,
The full AC part numbers for the referenced pumps are 5594346 (4346), 5594701 (4701), 5594663 (4663), 6440083 (40083). Only the last four or five digits were ever stamped on the flange. The 6106 is an unusual number, its full AC part number is 856106 and the only listing I can find for its use is on a Waukesha model XA or XAR commercial or marine engine.

[Chuck S.]

Re: AC Fuel pump ID help

Waukesha, huh??!! I'm trying to figure out a mystery, and it ain't making sense...yet! Thanks, Bernard.