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Click on image for the lowdown. 
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| | | Forums66 Topics128,050 Posts1,055,673 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: Apr 2008 Posts: 127 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 127 | Just got my new project. I've got the 228 original engine. Am I dealing with 6 or 12 volts. Positive or neg ground? Seems GMC different. Want to convert to alternator with 12 volt system, any big problems?? | | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | originally 6 V + ground, no telling what it might be now tho' so best just go over the whole system see hereBill | | |
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