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Old Mar 27, 2009 | 08:46 AM
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Default Alternator Date

I have a 70 BB with a build date of June 13, 1970 and need a correct alternator. What date should I look for?
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Old Mar 27, 2009 | 08:59 AM
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It should have the numbers 1100900, used on the 350-350, and 454-390 and dated before assembly of your car. I believe up to 6 months before the build date. Early VIN's would have 69 dates.
Glenn
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Old Mar 27, 2009 | 09:28 AM
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Thanks Glenn. That's what I was wondering about how far before the build date. Is there a limit on how far before the build date?
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Old Mar 27, 2009 | 12:49 PM
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I think what alternator you need would depend on the options your car has. Does your car have A/C? That will mean a different alternator than a non-A/C car. If memory serves it goes something like this:

350 / 300 hp, no A/C = 1100901 42 Amp
350 / 350 hp, no A/C = 1100900 42 Amp
350 / 370 hp, no A/C = 1100884 61 Amp (A/C not available with this engine)
454 / 390 hp, no A/C = 1100900 42 Amp

All with A/C = 1100884 61 Amp

Obviously, the closer you are to your build date, without going past it, the better.

Last edited by emccomas; Mar 27, 2009 at 12:56 PM.
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Old Mar 27, 2009 | 01:09 PM
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It's an AC car so I know I need a 1100884. Just wanted to know in what range a normal date would be. I know one built the day before my car was is not logical so that is why I was inquiring about a normal range of dates.
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Old Mar 27, 2009 | 02:37 PM
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Originally Posted by movinup
It's an AC car so I know I need a 1100884. Just wanted to know in what range a normal date would be. I know one built the day before my car was is not logical so that is why I was inquiring about a normal range of dates.

1100884 are fairly elusive alternators--expect to pay from 600-900 dollars and if you find one with close dates--ouch--they did not make a whole bunch of em--good luck


SEMPER FI--1970 Dave
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Old Mar 27, 2009 | 02:41 PM
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Yeah I know. How much does the 1100900 cost?
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Old Mar 27, 2009 | 03:09 PM
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more of the 1100900 were made so the availability should be greater and based upon condition I would imagine quite a bit less--John Pirkle would be a great starting point--very knowledgable and great reputation.

SEMPER FI--1970 Dave
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Old Mar 27, 2009 | 03:12 PM
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Probably should have given you some more info--John Pirkle--706-860-9047 or pirklesr@aol.com

SEMPER FI--1970 Dave
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Old Mar 27, 2009 | 03:21 PM
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1100900 is tough for some reason, you would have better luck with a 1100901. Price seems to be $300 to $400 for a 901.

Curious, why bother if you are not after the correct alternator? Date won't make any difference if the part is wrong.
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Old Mar 27, 2009 | 04:01 PM
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You need to figure out where you want to go--just take into consideration even though you aren't going for judging right now--the future is a strange fellow and the value is greater for the closer to original it is or you could make it with the correct parts you saved.

SEMPER FI--1970 Dave
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Old Mar 27, 2009 | 04:29 PM
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Originally Posted by 1970 Dave
more of the 1100900 were made so the availability should be greater and based upon condition I would imagine quite a bit less--John Pirkle would be a great starting point--very knowledgable and great reputation.

SEMPER FI--1970 Dave
Originally Posted by 1970 Dave
Probably should have given you some more info--John Pirkle--706-860-9047 or pirklesr@aol.com

SEMPER FI--1970 Dave
I actually sent John Perkle an email last night regarding an 859 or a 900 alternator for my '69, and he answered me today saying he didn't have any.
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Old Mar 27, 2009 | 04:32 PM
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Originally Posted by movinup
It's an AC car so I know I need a 1100884. Just wanted to know in what range a normal date would be. I know one built the day before my car was is not logical so that is why I was inquiring about a normal range of dates.
This is an important question. A couple years ago I ordered a dated overflow tank for my "November" car. Later I bothered to look at the birth date and found it was a November 1 car, so anything dated "November" would be virtually impossible.

I think the prior month on parts like alternators, water pumps, etc is best.
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Old Mar 27, 2009 | 05:39 PM
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The reason I was asking value on the 900 is that is what is on my car now. I would like to get an 884 so it would be correct and sell the 900.
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Old Mar 27, 2009 | 05:52 PM
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Originally Posted by movinup
The reason I was asking value on the 900 is that is what is on my car now. I would like to get an 884 so it would be correct and sell the 900.
What's the date?
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Old Mar 27, 2009 | 06:06 PM
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The stamp is 9L19 which would be good for my build date but it's the wrong alternator.
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Old Mar 27, 2009 | 07:38 PM
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Originally Posted by movinup
The stamp is 9L19 which would be good for my build date but it's the wrong alternator.
Hmm, its a good alternator for me but the date is about 3 weeks wrong.

Duh, just figured out I talked to you about this in the Parts section...

Last edited by vettebuyer6369; Mar 27, 2009 at 07:48 PM. Reason: epiphany
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Old Mar 27, 2009 | 08:28 PM
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If one of your goals is to obtain maximum judging points for NCRS, I have an 100881 from a '69 I would sell.

Yes it is too early for your car, but you would/should get partial credit for having the correctly designed back (it also has the diamond heat sink).

I also have another 42 amp alt with this same diamond heat sink back, but most of the numbers are so faded and weirded as to be illegible. (Prime candidate for a restamp maybe.)

Last edited by toddalin; Mar 27, 2009 at 08:46 PM.
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Old Mar 27, 2009 | 11:14 PM
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Originally Posted by toddalin
If one of your goals is to obtain maximum judging points for NCRS, I have an 100881 from a '69 I would sell.

Yes it is too early for your car, but you would/should get partial credit for having the correctly designed back (it also has the diamond heat sink).

I also have another 42 amp alt with this same diamond heat sink back, but most of the numbers are so faded and weirded as to be illegible. (Prime candidate for a restamp maybe.)
Whats the correct application for an 881?

Never mind- big block- I knew that...

Last edited by vettebuyer6369; Mar 28, 2009 at 12:55 AM. Reason: unnecessary question
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Old Mar 28, 2009 | 08:47 AM
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Thanks for the offer but I think I will hold out for the 884. I have a couple of leads.........
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