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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
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| | | | Joined: Jul 2010 Posts: 65 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2010 Posts: 65 | HI
I'm using AC46 Sparkplugs in my 37 1/2/ton
Can any on tell me the thread size and thread type?
Thanks
Den | | | | | Joined: Jan 2015 Posts: 914 'Bolter | | 'Bolter Joined: Jan 2015 Posts: 914 | Why not use the correct plug for the truck. They are
available so no need know thread info. Then once you
get the correct plug then you will be able to google
spec's on the plug by it's number. Jeffrey | | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | 13/16" hex, 14mm thread, 3/8" reach. | | |
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