1964 Alternator

[James C.]

Looking for some more advice - the alternator on my car (64) passed flight judging but they said the back should be turned (clocked) 180 degrees. When I checked my tech manual I think it is clocked correctly.

Any advice would be appreciated.

Thanks

Jim

[Jim D.]

[James C.]

Re: 1964 Alternator

Thanks Jim!! Appreciate the pic..

Jim C.

[Dan B.]

Re: 1964 Alternator

Good question and great answer. I know there are plenty more that need to be flipped 90*. It seems many have come from the rebuilders that way and people just assume it's correct. Thanks for that photo Jim.

[Joe L.]

Re: 1964 Alternator

Good question and great answer. I know there are plenty more that need to be flipped 90*. It seems many have come from the rebuilders that way and people just assume it's correct. Thanks for that photo Jim.

Dan------


GM used different part numbers for the various "clockings" of alternators otherwise identical. Rebuilders may not use the correct clocking for a particular part number.

[Richard S.]

Re: 1964 Alternator

With an A/C car the alternator is on the drivers side, is it 180* compared to the no A/C?

[Jim D.]

Re: 1964 Alternator

With an A/C car the alternator is on the drivers side, is it 180* compared to the no A/C?

Not sure about 64 but for 65 A/C and big block cars, the drivers side mounted alt. still has the gray plug at the 3 o'clock position.

[Dan B.]

Re: 1964 Alternator

Dan------


GM used different part numbers for the various "clockings" of alternators otherwise identical. Rebuilders may not use the correct clocking for a particular part number.

So, the same P/N alternator (eg. 1100668)ordered for a 64 Corvette from a GM dealer back in the day would have come clocked differently than one ordered for a 64 passenger car because they had different order numbers in the parts books? Very interesting, and makes sense. Thanks Joe.

[Joe L.]

Re: 1964 Alternator

So, the same P/N alternator (eg. 1100668)ordered for a 64 Corvette from a GM dealer back in the day would have come clocked differently than one ordered for a 64 passenger car because they had different order numbers in the parts books? Very interesting, and makes sense. Thanks Joe.

Dan------

Most likely, yes. However, a different part number would have resulted if there was some other difference in the alternators (e.g. amperage, etc.) even if they were clocked the same. Another example: sometimes alternators were used in PRODUCTION which were supplied to PRODUCTION with installed pulleys. Such alternators would have had a different part number than the exact same alternator supplied to PRODUCTION or SERVICE without an installed pulley. So, there were lots of reasons for different alternator part numbers and that's why there was such a plethora of alternator part numbers.