A904 high performance rebuild--advice wanted

Simple trans to rebuilt..got 3 of them in race cars..with another waiting to go racing shortly, one of them has 5 or more seasons of racing on them with transbrakes in them...

if you want to go HIPO...get the alto red disc and kolene steels...if it helps you sleep at night, get rid of the large wound spring in front clutch pac and install the 24 spring kit...

the rear spraq in the 904 is held in with rivets, there is nothing to gain with a bolt in spraq in a 904...just replace the springs and rolls with a 5 dollar kit from bulkparts.com..if you ever destroy the sprag...then the bolt in kit will save the trans....904 do not explode like a 727 because of the smaller mast size of the drum

with good bands and clutch/disc plus the new spring kit,,,,you should not spend more the 350 bucks on parts...I use the Sonnax rear servo upgrade...about 15 bucks..

As far as converters..pick your brand and spend your money...