Click on image for the lowdown. 
====
| | |
7 members (Chip O, 1955 1 Series, Gray_Ghost, JoergK., Peggy M, oldieoldie, 1 invisible),
177
guests, and
3
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,191 Posts1,057,348 Members48,469 | | 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!
| | THANKS!
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: Jan 2005 Posts: 1,682 Extreme Gabster | | Extreme Gabster Joined: Jan 2005 Posts: 1,682 | The writing on the plugs says "AC 104" and they're small.. real small.
I called both my local Pronto guy and NAPA guy and both say "We ain't got 'em, we can't get 'em."
AutoZones website suggests they have them.. guess i'll go there and see.. but I suspect they'll be "full size" plugs.
So for you dudes with a 216 and dinky little spark plugs, where did you get 'em?
an idea is only stupid if you think about it rationally.
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | Fumblin, Go to Autozone, get the plugs that aren't Sanforized, take em home and throw them in the washer...presto, small plugs  Stuart. | | | | | Joined: Jan 2005 Posts: 1,682 Extreme Gabster | | Extreme Gabster Joined: Jan 2005 Posts: 1,682 |  The dinky plugs marked AC104 have a modern day Champion equivilent.. called a 842. Nobody had them in stock.. their Autolite, Motorcraft, and even AC Delco cross refrence numbers to that plug ended up being totally wrong. (read normal sized plugs) Champions website only lists the one plug for a 1946 Chevrolet Truck.. 10mm, 1/4" reach, 5/8" hex head Stock number 842, Part Number UY6, OE Gap, .037 When I took the plug into the various auto parts stores, the first thing they'd ask is "Whats this out of, a weed wacker?" to which I replied, "No.. my weed wacker plug is bigger than that!" Anybody else ever seen or heard of these dinky plugs?
an idea is only stupid if you think about it rationally.
| | | | | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | atomarc, is that a good way to reduce all things?
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | | | | Joined: Oct 2004 Posts: 235 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2004 Posts: 235 | Fumblin46,
Chevs of the Forties and Jim Carter have the little 10mm plugs. I think that Carters are a bit cheaper.
Cheers mate
Bob | | | | | Joined: Apr 2005 Posts: 37 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2005 Posts: 37 | Fumblin
I had the parts guy (a close friend) at my local Chevy dealer confirm that my 216 took champion J11's. Now they are discontinued and now they are replaced by J11C'S which my local UAP carriers.
I found nos J11's on ebay the other day. They should be here soon.
Hope this helps.
Rob | | | | | Joined: Jan 2005 Posts: 1,682 Extreme Gabster | | Extreme Gabster Joined: Jan 2005 Posts: 1,682 | Rob,
J11C comes up as a 14mm, 3/8" reach, 13/16" hex head, copper core, which would be the bigger plug.
They appear to be the same reach and thread diameter as the Champion 871's I have in the '46 2 ton, and had in the '50 1/2 ton.. the only difference between the J11C and the 871's is that the 871's are resistor type plugs to help reduce radio frequency interference. (static in the radio).
an idea is only stupid if you think about it rationally.
| | |
|
|
