I uncovered some interesting information regarding 1969 alternator applications today and I thought that I'd present it here. I was looking at a friend's original owner, 1969 L-46 coupe. This car is a 4 speed, non-TI, non A/C. The alternator on it is unquestionably original. It has all of the unique-to-1969 Corvette alternator case configuration elements and the owner absolutely knows that the alternator was never changed.
The interesting thing is that the alternator is a GM #1100882. The alternator still has the "NS" ink-stamped broadcast code clearly visible on it which is also the known code for the '882' alternator. The date code is "8K25" which is consistent with his car's build date (but only a few days before). The alternator is stamped 61A for 61 amp. Apparently, the '882' alternator was used for applications other than those for which it is generally regarded to have been used. Plus, this useage and date would indicate that it was used very early in the 1969 model year and not just later in the model year.
Unrelated to this, but related to the '882' alternator, is the fact that I have another '882' alternator which I purchased some time ago [not for sale]. This unit has an incorrect split ring case half but the drive end case half (with the numbers on it, of course) is the unique-to-1969 Corvette configuration. I am VERY confident that this is an original Corvette unit and has not been "re-stamped" or otherwise tampered with. The date on this unit is "8J17". The interesting thing is that this unit is stamped 55A for 55 amps. Generally speaking, the '882' unit is considered to be a 61 amp unit and every spec that I have seen for it indicates that it is rated at 61 amps. So, either this 55A stamping is a mistake or the '882' was manufactured with 2 different ratings. That's VERY unusual for any given GM part number.
The interesting thing is that the alternator is a GM #1100882. The alternator still has the "NS" ink-stamped broadcast code clearly visible on it which is also the known code for the '882' alternator. The date code is "8K25" which is consistent with his car's build date (but only a few days before). The alternator is stamped 61A for 61 amp. Apparently, the '882' alternator was used for applications other than those for which it is generally regarded to have been used. Plus, this useage and date would indicate that it was used very early in the 1969 model year and not just later in the model year.
Unrelated to this, but related to the '882' alternator, is the fact that I have another '882' alternator which I purchased some time ago [not for sale]. This unit has an incorrect split ring case half but the drive end case half (with the numbers on it, of course) is the unique-to-1969 Corvette configuration. I am VERY confident that this is an original Corvette unit and has not been "re-stamped" or otherwise tampered with. The date on this unit is "8J17". The interesting thing is that this unit is stamped 55A for 55 amps. Generally speaking, the '882' unit is considered to be a 61 amp unit and every spec that I have seen for it indicates that it is rated at 61 amps. So, either this 55A stamping is a mistake or the '882' was manufactured with 2 different ratings. That's VERY unusual for any given GM part number.
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