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Click on image for the lowdown. 
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7 members (Shaffer's1950, Steelonsteel, Hotrod Lincoln, 2-Ton, homer52, Tiny, mo2cyl),
112
guests, and
3
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,049 Posts1,055,665 Members48,426 | | 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 2009 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2009 Posts: 36 | i have a 48 loadmaster i see no switch or vacume piece on the rear end. so i assume that it is not a 2 speed rear end. did some just have a single speed rear end or does it sound like someone has changed it?
remember rust is our friend
| | | | | Joined: Jul 2002 Posts: 165 'Bolter | | 'Bolter Joined: Jul 2002 Posts: 165 | Not all trucks had 2 speed rear ends. | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Single speed is most common on 1.5 ton (4000 series) AD trucks, although a 2 speed could be ordered.
Most 2 tons (6000 series) trucks had a 2 speed.
What model number truck do you have? ("Loadmaster" doesn't tell us much)
Grigg | | | | | Joined: Jan 2009 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2009 Posts: 36 | its a 4400 series i do believe
remember rust is our friend
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