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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!
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#95581 05/12/2006 8:12 AM | Joined: Oct 2002 Posts: 42 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 42 | Hi,
Took over a 19540 Chevy 3800 1-ton dually from original owners. Was a daily driver on their horse ranch. it was fired up everyday 2x a day for ranch work no problems. folks sold the ranch and it sat idle for 2 years.
Question: where these originally a 12v system? appears that old battery is 12v, looks like a alternator is installed.
Anything else to check?
What battery size should work for this?
Thanks
Boom
'50 Chevy 1 ton dually daily driver, 1960 Ford F-100, 1972 GMC C-20, 1958 Kenworth, Cat D4, 1972 Ford F100 Ranger
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#95582 05/12/2006 1:10 PM | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | 1954 Chevrolet trucks were all 6v systems.
An alternator is an indicator that changes have been made, most likely to 12v, but there is very small chance it is a 6v alternator.
If the battery has 3 cells (caps), it is 6v; if it has 6 cells (caps), it is 12v. 8v batteries were a rare "upgrade".
Post a few of the light bulb numbers and they can be identified as 12v or 6v. | | |
#95583 05/12/2006 1:30 PM | Joined: Feb 2006 Posts: 395 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 395 | 6 volt from the factory,,if changed to 12 someone has done it,,size??naything that will fit in batt comp...doc | | |
#95584 05/13/2006 12:39 AM | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Group sizes 35 and 80 (75/35 universal fit) should be O.K.
Bill Burmeister
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