Chevrolet transmission bearing numbers

[Bob Carriere]

Hi Bob

Just found you PM.

On all the bearings for my cab 11...... the original part numbers and modern equivalent were only used to confirm we had the right ones after we ordered by size alone.

I made use of Industrial Solutions on Ottawa but understand that GBS, General Bearing Services, work on the same basis. Bring the parts in and the measure the ID...OD...thickness and use a modern search engine to identify the makers and where they are in stock.....location can affect the price with shipping.

Of all the bearings on my cab 11 the only one that was and is still a problem to locate is the bottom rear most bearing C 1207....... fortunately it is located low in the gear box and usually swims in oil and most are still good. It seems that there are few if any modern equivlent that will match the ID and OD.

Note that on some modern bearings they have a sealed neoprene facing ....some on one face some on both....... depending on the location they can be made/modified to suit the gear box location by carefully cutting the neoprene seal on the face of the bearing that is facing to the inside and let the gear oil run into the bearing race.

One more caution on the gear box rebuild...... on the back side.... where the output yoke is located..... the original oil seals have a sheet metal washer design like mikey mouse ears.... so the bolts actually go through the seal edge....... as far as I know the original desing is NO longer made but if you carefully dismantle the used original seal you can salvage the sheet metal that will hold the new seal in place. Use lock tite on these bolts so they will not back off and be sheared off by the rotating Yoke....... Similarly when installing the U-Joint to the Yoke use self locking nuts and lock tite to make sure the yoke bolts will not work loose and shear the rear cover off the tranny.

Lock tite can be easily overcomed with a small propane torch or an electric paint stripper gun if open flame is not your favorite trick.

Bob...input shaft is on the way.....with the bearing.

Been slowed down with a broken ankle which has finally healed well but left me with a hip bursitis...... bitch!!!!!

Just call me Hoop a long...........