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Mod | | | Forums66 Topics128,179 Posts1,057,159 Members48,465 | | 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!
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| | | | Joined: Jul 2009 Posts: 90 Shop Shark | | Shop Shark Joined: Jul 2009 Posts: 90 | My "new to me" 3 speed overdrive from a '57 Chevrolet (muncie 319(318)w/borg warner r-10 overdrive) had what appeared to be some silicon that was most likely used to seal a leak. In the picture below, you can see that of the two round holes in the middle the one on the right has been sealed and the one in the middle was sealed with a much more crude attempt. I pulled it all off. Is this a known area of leakage? How difficult would it be to keep this area from leaking? Would putting a type of sealant back on it be an adequate solution? Picture of Leaky Area Thanks, Brandon
Last edited by Vetteman61; 08/06/2016 4:44 AM. Reason: forgot to add picture
| | | | | Joined: Apr 2005 Posts: 2,102 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,102 | The shaft with the grey sealant is the counter gear or more commonly known as the cluster gear. The other shaft is the reverse idler. The one with the grey sealant is the common practice after assembly. That's about all you can do. Clean them up and apply some good sealant like Permatex gasket maker. There normally isn't much more than a small amount of seepage from those shafts.
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: Jun 2005 Posts: 1,003 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,003 | If the welch plug still leaks, it's easy enough to replace and reseal. I think it's 15/16"
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | | | | Joined: Jul 2009 Posts: 90 Shop Shark | | Shop Shark Joined: Jul 2009 Posts: 90 | | | |
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