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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
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on the Internet for over 30 years! and not clogged down
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#95066 03/17/2006 4:39 PM | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I am not sure about this and hope that someone who is certain will correct me. American GMCs used 6v positive ground on 6 cylinder engines through 1955-2nd series and used 12v negative ground on V-8s on 1955-2nd series trucks (as standard equipment - some models had optional voltages). | | |
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