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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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| | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy ThreeTree53, what I did to check which of the Autozone resistors is appropriate was I identified what I was working on to the Autozone website, I used a 1956 Chevrolet 3100 pickup, as 12 volts didn't start to be used until 1955, I used 56 just to be sure they were 12 volt. The first two on the list came up as does/will NOT fit your vehicle, the third resistor p/n DR794 DOES fit your vehicle.
As to your coil question, no not all 12 volt coils are created equal, to begin with there are coils that are designed to work without external resistors, also all different outputs are available. If you went into Autozone and told them you would like to purchase an ignition coil to fit a 1956 Chevrolet 1/2 ton (3100) with a six cylinder engine, they would sell you an ignition coil appropriate to replace your original coil, hope that answers your questions. | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Quite common to have to be a bit knowledgeable and also sneaky when dealing with the parts stores. 3B has it nailed. Just fudge a few years to get into a range where parts work.ðŸ›
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Nov 2017 Posts: 41 Fixer of Things I Probably Broke | | Fixer of Things I Probably Broke Joined: Nov 2017 Posts: 41 | @3B Awesome! That's a good lead (the year thing started switching to 12v) thanks for the tip and the info.
1953 Chevy 3100 Frankentruck with 235 and mostly original bits.
| | | | | Joined: Aug 2020 Posts: 1 Moderated | | Moderated Joined: Aug 2020 Posts: 1 | Hello...you can't "short" a counterbalance to short of what it was initially constructed. In the event that your meter checks it at zero, it's acceptable. This is on the grounds that they are a wire wound obstruction. There is just no chance that they can FAIL with generously less obstruction than they were fabricated with. Generally, a counterweight either comes up short "open" or "discontinuous," IE it's messed up inside and reaches a portion of the time. ' flex circuit design for manufacturability guide
Last edited by CarlyAzuma; 08/28/2020 7:03 PM.
| | | | | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | My coil says "No External Resistor Required." Made life easier. I probably got it at NAPA.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | What part number NAPA coil? | | | | | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | Mine is a 12V Echlin, 905. Installed in 2007. No complaints.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
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