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Click on image for the lowdown. 
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7 members (msmall, Otto Skorzeny, Phak1, 55shaker, TUTS 59, Wayne67vert, 1 invisible),
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Global Mod,
Mod | | | Forums66 Topics128,095 Posts1,056,069 Members48,433 | | 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: Feb 2008 Posts: 212 'Bolter | | 'Bolter Joined: Feb 2008 Posts: 212 | My overdrive was singing and noisy so I pulled it out and put the old 3 speed back in. I purchased a rebuild kit from cobra transmission and am about to attempt the rebuild. The question is do you also disassemble the overdrive unit or just rebuild the front half . It worked fine but it was very loud. | | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | You will need to disassemble the entire unit. There are 3 bearings in an overdrive transmission. The center bearing is on the mainshaft which is integral to the overdrive components. The rear bearing is on the rear shaft which contains the planetary ring gear.
There is a good break down in the 55 factory shop manual available from numerous aftermarket sources. There are numerous posts on his site regarding this subject. We are here to help.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Feb 2008 Posts: 212 'Bolter | | 'Bolter Joined: Feb 2008 Posts: 212 | thanks for the info. I will get started after I get a manual. | | |
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