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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: May 2019 Posts: 231 'Bolter | | 'Bolter Joined: May 2019 Posts: 231 | All
Is a 27 Chevy truck positive or negative ground?
Helping a friend get this restored truck running and then it’s up for sale if anyone is interested
Thanks | | | | | Joined: Oct 2021 Posts: 6,684 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,684 |
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: May 2019 Posts: 231 'Bolter | | 'Bolter Joined: May 2019 Posts: 231 | | | | | | Joined: Aug 2010 Posts: 593 'Bolter | | 'Bolter Joined: Aug 2010 Posts: 593 | My old '47 was positive ground. I thought everything was, til the mid 1950s and 12 volt.. interesting.
1965 C60 school bus | 1967 GMC 6500 school bus
| | | | | Joined: Oct 2021 Posts: 6,684 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,684 | I thought only GMC was (+) until then. I believe Chevrolet trucks were (-) ground since day one.
I just looked up a 1927 Chevrolet wiring diagram and it definitely shows a (-) ground
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 |
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Oct 2021 Posts: 6,684 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,684 | They are. All Chevy trucks were negative ground from their inception
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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