1969 with a1100901 alternator

[Bob W.]

I have a 1969 base 300 hp that my dad bought new with a 1100901 alternator. The Black book & the NCRS specification guide states this car should have a 1100859 alternator. Also this car was built on 12/2/1969. Most of the work on this car was done by me or my dad. And I don't remember changing the alternator. With this car having 99% of its original parts I would like to have the correct alternator if the 1100901 is not correct for a Dec. 1969 built car

Thanks Bob

[Terry M.]

Re: 1969 with a1100901 alternator

I have a 1969 base 300 hp that my dad bought new with a 1100901 alternator. The Black book & the NCRS specification guide states this car should have a 1100859 alternator. Also this car was built on 12/2/1969. Most of the work on this car was done by me or my dad. And I don't remember changing the alternator. With this car having 99% of its original parts I would like to have the correct alternator if the 1100901 is not correct for a Dec. 1969 built car

Thanks Bob

Bob
What is the assembly date of your 1100901 alternator?

[Bob W.]

Re: 1969 with a1100901 alternator

Terry, I think the date is 9G3. This car is not stored at my house.

Thanks Bob

[Terry M.]

Re: 1969 with a1100901 alternator

Terry, I think the date is 9G3. This car is not stored at my house.

Thanks Bob

G = July That is 6 months from the December build of the car. I would rate that an unlikely event.

[Bob W.]

Re: 1969 with a1100901 alternator

Terry, thanks for the reply so do you think I should look for a 1100859 alternator? And about what date?

Thanks Bob

[Terry M.]

Re: 1969 with a1100901 alternator

Terry, thanks for the reply so do you think I should look for a 1100859 alternator? And about what date?

Thanks Bob

I don't have my judging guide handy, so I can't back up your alternator number -- but if you are sure you have the number right, that is what i would look for. Dates are supposed to be within 6 months of body build date off the trim tag. They are more typically a month or so before the body build date. Look for a November date. 1969 alternators have a unique rear housing -- the most recent judging guide has pictures. Be sure your purchase has the correct rear end. That sounds different than what I mean.

[David H.]

Re: 1969 with a1100901 alternator

G = July That is 6 months from the December build of the car. I would rate that an unlikely event.

There was a two month strike (April-May) effecting 1969 production. I expect those folks did not care about first-in-first-out inventory controls. Might just be a good date.


Dave

[Joe L.]

Re: 1969 with a1100901 alternator

I have a 1969 base 300 hp that my dad bought new with a 1100901 alternator. The Black book & the NCRS specification guide states this car should have a 1100859 alternator. Also this car was built on 12/2/1969. Most of the work on this car was done by me or my dad. And I don't remember changing the alternator. With this car having 99% of its original parts I would like to have the correct alternator if the 1100901 is not correct for a Dec. 1969 built car

Thanks Bob

Bob------

Please post photos of the alternator, especially front and rear case halves.

[Terry M.]

Re: 1969 with a1100901 alternator

There was a two month strike (April-May) effecting 1969 production. I expect those folks did not care about first-in-first-out inventory controls. Might just be a good date.


Dave

Dave, Was that work stoppage just at the Assembly Plant or GM wide?
And if at just the Assembly Plant, do you suppose parts inventory continued to be stocked while the Assembly Plant was idled?
Of course if it was GM wide then parts would not have been made either.
Do you see the rabbit hole this gets one falling into?

Anyway, I would think an April/May work stoppage would not have been a factor in a July built alternator for a December built car. The part and car are in the last half of the year and the "strike" was in the first half.

[Bob W.]

Re: 1969 with a1100901 alternator

Joe, I would like to but the car is not at my house and I have nothing to take photos with. Do you think if my dad did change the alternator would the over the counter one have these numbers. He always used GM parts from the dealer.

Thanks Bob

[David H.]

Re: 1969 with a1100901 alternator

Dave, Was that work stoppage just at the Assembly Plant or GM wide?
And if at just the Assembly Plant, do you suppose parts inventory continued to be stocked while the Assembly Plant was idled?
Of course if it was GM wide then parts would not have been made either.
Do you see the rabbit hole this gets one falling into?

Anyway, I would think an April/May work stoppage would not have been a factor in a July built alternator for a December built car. The part and car are in the last half of the year and the "strike" was in the first half.

Terry,

My thought was, it takes time for strike effects to ripple through a supply chain. I figure 1969 production was extended into December in order to burn through a build up of suppliers inventory. GM would not want to eat/waste material on hand - better to use it up. Just like "early" / "late" alternators etc - use it up - don't waste anything.

Perhaps this accounts for otherwise wonky dates.

Dave

Added: "Ripple" effects work both ways - takes time to shut supplier production down, and also, takes time to start production up.

[Joe L.]

Re: 1969 with a1100901 alternator

Joe, I would like to but the car is not at my house and I have nothing to take photos with. Do you think if my dad did change the alternator would the over the counter one have these numbers. He always used GM parts from the dealer.

Thanks Bob

Bob------

I'm not sure if this alternator was ever a SERVICE-available part number. I'm away from home right now and I can't check it.

In any event, regardless of dates and considering that this car is a very late 1969, I am quite confident that this is the original alternator. I just can't see an alternator this rare ending up on this car by accident.

I would still like to see photos of the alternator if you can find a way to get them.

[Bob W.]

Re: 1969 with a1100901 alternator

Joe, I will see if I get my son to take some photo and we can go from there.

Bob