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  #1  
Old 05-31-2024, 02:03 PM
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skunkwerks skunkwerks is offline
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Default 1100903 Alternator
www.ebay.com/itm/335345634747

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  #2  
Old 06-02-2024, 01:47 AM
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IMHO, the rear case is not correct for ( 69) 1970. Just an observation as an enthusiast.

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Old 06-02-2024, 12:11 PM
gto4ben gto4ben is online now
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I agree. The cooling slots look different.
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Click image for larger version Name: 1100903 spec.jpg Views: 63 Size: 24.8 KB ID: 634608   Click image for larger version Name: img001.jpg Views: 93 Size: 99.1 KB ID: 634609  

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  #4  
Old 06-03-2024, 11:32 AM
Ramairnacho Ramairnacho is offline
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It's a rebuilt unit that is missing the correct diamond 1 year only back

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  #5  
Old 06-03-2024, 12:27 PM
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I think that's rather common with these early internally regulated units - and probably why each half demands as much as they do.

I currently have that style back end on my alternator - the bolt boss on the back of my original rear case was damaged, and I swapped it because I was worried about proper bolt grip... I really should reunite correct haves together.

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  #6  
Old 06-03-2024, 06:44 PM
Ramairnacho Ramairnacho is offline
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Quote:
Originally Posted by unruhjonny View Post
I think that's rather common with these early internally regulated units - and probably why each half demands as much as they do.

I currently have that style back end on my alternator - the bolt boss on the back of my original rear case was damaged, and I swapped it because I was worried about proper bolt grip... I really should reunite correct haves together.
What common in the 903 alternator? Im.confused by what you said.

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  #7  
Old 06-03-2024, 08:23 PM
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Held for Ransom Held for Ransom is offline
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Why do you find the backs swapped out of the '70 Firebird alternators? Ask the '69 Corvette guys...

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Old 06-04-2024, 11:49 PM
Tellyshavilli Tellyshavilli is offline
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Quote:
Originally Posted by Formulabruce View Post
IMHO, the rear case is not correct for ( 69) 1970. Just an observation as an enthusiast.
Definitely not correct. Should have raised fin with boss at 4 o’clock position

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  #9  
Old 06-05-2024, 10:09 AM
gto4ben gto4ben is online now
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Quote:
Originally Posted by Tellyshavilli View Post
Definitely not correct. Should have raised fin with boss at 4 o’clock position
something like this I expect.
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