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I was tearing apart my 904 for rebuild and noticed that I have a lock-up valve body, but the input shaft indicates it is a non lock-up unit. I heard they are incompatible, but I'm not sure how this works. Is it possible to cap or bypass the lock-up unit to prevent actuation as a work-around? Can...

I am currently in the middle of my first transmission rebuild, but I have never had the pleasure of assembling anything with piston seals. Can anyone tell me which side of the seal is the sealing side? And, is there a general rule of thumb for knowing this? I attached a picture below for a...

Hey all, This is to be the first post of many, I'm sure. I just bought a '71 Duster with a 318, and the guy said it had a 904 behind it, but my numbers are starting to seem a little off. Can anyone tell me what a PK4431428 9705 is. I'm looking to do a rebuild on it, and would like any...