So My fresh 727 and freshly tightened converter would go forward in all gears including 1, 2, 3 neutral and reverse. This is in my race car. This is a new motor combo, and motor has no more than 20 minutes of run time in the car, most of it idling. Did drive it around the driveway for 2-3 minutes tops.
Tore the transmission apart today. Heavy contamination. All the black contamination in the pictures picked up by a magnet. All components inside the transmission looked okay. Lots of contamination in the valve body that could have locked up a shuttle valve.
My transmission guy says the torque converter failed. Does this make sense? Like I said - it never even hit the track.......
First question, why was the trans rebuilt the first time?
Second, being a race trans, I assume it’s a manual shift valve body. If so, there is nothing in the valve body that will keep the rear clutch on in all gears. Unless the manual valve is stuck in the forward position.
As for the converter - a dirty converter or one that failed usually puts trash through the pump.
