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2 members (J Lucas, pauld),
123
guests, and
2
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,183 Posts1,057,263 Members48,467 | | 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: May 2014 Posts: 75 'Bolter | | 'Bolter Joined: May 2014 Posts: 75 | I hear both of these terms used in relation to AD trucks but I cant find out what the differences between them are. The 51 3600 I bought last year has had the rear end gears changed to 3.73 (I'm told) and the truck now runs 6 bolt 15" radial tires on it. Still has 216 and 3 speed trans. I don't know if the driveshaft was or had to be changed when the previous owner changed the rear end.
How do I tell which style of driveshaft I have?
Thank you in advance.
Brad. | | | | | Joined: Sep 2010 Posts: 122 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 122 | if you can see the driveshaft turning while the car is moving the driveshaft is "open". If you can't see it, its enclosed in a torque tube | | | | | Joined: Sep 2010 Posts: 122 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 122 | if you can see the driveshaft turning while the car is moving the driveshaft is "open". If you can't see it, its enclosed in a torque tube | | | | | Joined: May 2014 Posts: 75 'Bolter | | 'Bolter Joined: May 2014 Posts: 75 | Ok thanks guys, I'll check mine tomorrow.
Brad. | | | | | Joined: Sep 2007 Posts: 393 'Bolter | | 'Bolter Joined: Sep 2007 Posts: 393 | If you can see something like this at each end of the drive shaft, you have an open drive line. If you can't see these then you have an enclosed,or torque tube, drive line.
It's a small world, but I wouldn't want to paint it.
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | So the 3600 actually had a short torque tube and then an open drive shaft. I have no idea why they came up with such a weird combination but they did. | | | | | Joined: Mar 2010 Posts: 10,309 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,309 | So the 3600 actually had a short torque tube and then an open drive shaft. I have no idea why they came up with such a weird combination but they did. Probably so they could still use the same, old design transmissions. Carl
Last edited by 52Carl; 09/20/2015 2:49 AM.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
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