I have been running overdrives in y-blocks for over 45 years. The backside almost bullet proof. But it is machinery and machines break. I would suspect that the back section may have run dry. Fords used a BW front section while Chev used their own front except for the rare heavy duty option. The back section is the same except for the main shaft having different splines. Overdrive repair manuals are on eBay all the time. Buy a repair manual and study it. The planetary gears are on eBay occasionally, but used gears out of a Ford will work. And they are very available... I just noticed you are down near München. Maybe parts are not so available there. Buy a book and tear it down and figure out what you need. It would be cheaper to buy just the parts you need.
Last edited by crenwelge; 09/14/2009 6:10 PM.
