tiffinohio
Member
Hello, new to the Forum! I am restoring a 71 Valiant. /6 trying to get 350HP out of ??? Installed a 7 1/4 Surelock rearend to try to stay stock. But my issue is the 904 transmission. I am rebuilding it and I have found the following. The rear clutch pack has only 3 frictions and 2 steels (as torn apart). It is suppose to have 4 frictions and 3 steels. The front clutch has 3 frictions and 3 steels (as torn apart), it is suppose to have 4 frictions and 4 steels. This is all according to the repair manual. I thought maybe it wasn't a 904, but everything measures out including 31" from nose to tail. The front clutch has about 3/16" clearance to the snap ring, with 3 frictions and 3 steels (close to same as pre-teardown). So I am getting the pressure plate milled 0.050 with that I can add the 4th friction and steel and end up with .080 clearance. I think I am OK there. But my rear drum with only 3 frictions and 2 steels has 0.035 clearance. I am replacing whatever was in the 904 with alto red frictions and Kolene steels. I would have to mill >0.125 off the pressure plate to achieve the required clutches and steels. Any guess why both clutch packs were short a steel and a friction, and any recommendations on what to do with the rear clutch pack, can I mill that much off the pressure plate? My boy is going to be a burnout giant so I don't want to skimp on clutches. I am also installing a Manual\reverse pattern valve body. No idea if anyone has been in there before. Picked up the car on the side of the road, my 13 year old fell in love with it and we are doing a COMPLETE restoration. Any help would be greatly appreciated!
Tiffinohio
Tiffinohio