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Click on image for the lowdown. 
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| | | Forums66 Topics128,041 Posts1,055,593 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2013 Posts: 255 'Bolter | | 'Bolter Joined: Aug 2013 Posts: 255 | I believe the shaft is 17 mm. I say this because the pulley off my GMC 6 volt Generator fit a modern alternator shaft. The early 1950 GMC generator will have the wider 3/4 belt as stated above. | | |
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