69 dated alternator

[Don W.]

Are they any places making correct date alternators or is ebay the real option. Also, what's correct gm number to look for? 427/390 HP non ac. Thanks...Don

[Joe L.]

Re: 69 dated alternator

Are they any places making correct date alternators or is ebay the real option. Also, what's correct gm number to look for? 427/390 HP non ac. Thanks...Don

Don------

The one you need is a GM #1100833. This is a VERY difficult alternator to find.

In the case of this alternator, it's not just about "numbers" as it is with many other alternators. 1969 Corvette alternators used drive end and split ring end case halves which were pretty much unique to that model year. For the 1969 model year the SI series alternators were exclusive to Corvette and a few other GM models. So, there were not that many of these unique-to-1969 case halves ever out there.

By the way, most of the 1100833 stamped alternators you find, including those selling for BIG $$$$$, will likely be re-stamps.

[Ralph S.]

Re: 69 dated alternator

what is the build date of the car.

[Don W.]

Re: 69 dated alternator

November 1969

[Rick A.]

Re: 69 dated alternator

Don

Check the DRIVELINE, as both Ken Bruno Motorsports and John Pirkle both advertise - you never know what they may have

[Jimmy B.]

Re: 69 dated alternator

what's wrong with alternator 1100881 for his 390 hp car???

[Russ S.]

Re: 69 dated alternator

I have a friend who was lo0oking for this alternator for his 69 390 and was told by a couple of very involved NCRS gentlemen that he wouldn't find one. He stopped by a local old timer starter and alternator repair shop for something else and just asked if he had one. The old guy says "yes I think I've had one on the shelf for a long time". He sold it to my friend for a song

Don------The one you need is a GM #1100833. This is a VERY difficult alternator to find.In the case of this alternator, it's not just about "numbers" as it is with many other alternators. 1969 Corvette alternators used drive end and split ring end case halves which were pretty much unique to that model year. For the 1969 model year the SI series alternators were exclusive to Corvette and a few other GM models. So, there were not that many of these unique-to-1969 case halves ever out there.By the way, most of the 1100833 stamped alternators you find, including those selling for BIG $$$$$, will likely be re-stamps.

[Don W.]

Re: 69 dated alternator

According to the posts above; that's not the correct number for my vehicle. Mine is a 427/390/ THM Auto/Non-AC, so not sure what's the proper number for your car vs mine...Don

[Joe L.]

Re: 69 dated alternator

what's wrong with alternator 1100881 for his 390 hp car???

Jimmy------


An 1100881 could also have been used. These are about as hard to find as an1100833.

[Edward B.]

Re: 69 dated alternator

A November, 1969 build could have come with the 1100833 but I doubt it. This late in the model year it would probably have come with the 1100881 or (more than likely) the 1100900 alternator, but no matter how you slice it, you're going to pay big $$$ if you can even find one. Any alternator that has the 7 cooling fins on the rear case is going to demand a premium.

HERE'S a November 21st, 1969 date on ebay, and although it's high priced, it's nothing compared to others I've seen.

Ed

[Don W.]

Re: 69 dated alternator

Well it looks like I may have multiple expensive, impossible to find, alternatives including: 1100833, 1100881, 1100900, and 1100825.

Here a post from corvette forum from data in Rick Bizzico's book:
Here are the '69 alternators, per the 1969 Stingray Guide Book, Rick Bizzoco.

Option Base C60/K66
ZQ4 Base eng. 1100859 1100884
L46 1100859 1100884
L36 1100883 1100825
L71 1100882
L88 1100882
The C60 and K66 requird a stronger charging system. The K66 option (transistor ign.) option utilizd 6.25 amps to run the system compared to 2 amps for the conventional distributor. This increased amperage need was met with a 61 amp alternator.

[Don W.]

Re: 69 dated alternator

Are these scratches accross the numbers and date codes fixable?Alternator scratches.jpg

[Edward B.]

Re: 69 dated alternator

Bizzico's book is a fairly good reference but it's a bit outdated. It's now 20 years old and some of the information in it isn't correct. If you want a better reference, get the 1968-1969 CORVETTE TECHNICAL INFORMATION MANUAL AND JUDGING GUIDE.

And unless you have C60 or K66, you can remove the 1100825 from your list.

The scratches can be reduced by buffing, but I don't think you'll get rid of them altogether. Looks like a few are just too deep. Do you have N40 Power Steering? If so, I wouldn't worry too much about them since the numbers are difficult to see when the alternator is mounted. Do you have your car judged?

Ed

[Don W.]

Re: 69 dated alternator

Hi Ed...I have both references, yes I have PS and that's not my alternator, just one that might be for sale. I had the car judged at an AZ chapter meet about 7 years ago in it's initial basket-case status and I'm taking to the NW Regionals in August for flight judging...Don

[Edward B.]

Re: 69 dated alternator

I don't have my car judged so I can't comment on points lost for scratches, but the 427 with N40 Power Steering has the alternator mounted in such a way that it's hard to see the numbers. If you can get most of them taken care of, you may be okay. John Pirkle (Jr), can probably advise better than I can. Give him a call or send him an email. His WEB site is http://johnpirkle.com

Ed