904 Transmission Stopped Going Into Gear

Thanks for all the info everyone, learning a lot here.


My goals for this car at this point are:

-Do a stock rebuild job on this slant 6 904 so I can put it back in the Duster and get her back on the road and have fun driving around with the stock 225 engine while I fix up other stuff on the car.

-Gather information and parts to do a v8 conversion. I already have a built 318 in the 300 hp range for this. Just need a v8 904 or 727 to put with it.


To that end, I like the idea of upgrading to better drums, clutch disk capacity, etc. but I dont see much point because Im going to put this 904 behind a stock 225 slant 6 until I am ready to go to a v8 and then I will not be able to use this slant 6 904.

As always, I'm open to thoughts/comments/ramblings...