Been running 904s for over 30 years only broke one and that was my fault due to a shifter adjustment gone wrong.. Good parts, Turbo Action manual reverse pattern valve body, 5 disc clutch , rollerized output shaft, etc. go thru it about every 5 years or so, I have two identical 904s one in car , one spare... 3150 lb. w/ driver 68 Dart 11.50s on a stop but capable of 10.60s

Last edited by 11secdart; 07/03/21 12:53 PM.
68 Dart 410 / 904
92 D150 original owner
21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4
23 Audi Q5
16 Honda HRV