3650 lbs low to mid 10's. Stock 727 with cheata VB. 5500 ati converter. Foot braked for many yrs and street driven. A trans is only as good as the operator. You screw up they blow up. A 904 in this car the way it was driven with this HP would have fell out the bottom years ago.
Keep them cool with fresh fluid and watch when and how you shift they last a long time. I would recommend any car weighing more then 3100 with 500 plus HP use a 727 for the yearly street and track . A Track only car or under 2900 you can get away with a 904 for a couple years. The trans in my car was the original trans. Clutches, plates and bands once in 45 years. Its last day at the track it started flaring when shifting into 3rd at around 7900 when hot. you can hear it in this second video compared to the first video.
First video cool
Second video was a third time back to back pass. Listen to the difference on the third gear shift. A 904 wouldn't have held up to a hot flare like this all night pulling 0ver 3800 lbs. with driver it would have burned up. Been there.
904's are lighter , quicker and cheaper to build. Great for a racer. But no way are they as durable as a 727. Put a 904 behind my cummins and it wouldn't last one pull. I don't think it would make it out of low gear.
