727 converter

Also the low band apply is helping keep the low reverse drum from moving, along with the sprag that only moves in one direction. Without low band apply you are relying on just the sprag to hold the low/reverse drum. Keep in mind it’s only 1st gear the sprag is used, it freewheels in 2nd and 3rd. How can the 727 sprage fail in a transmission ?

1. Any time the sprage is shocked, you break a U-joint, axle, or ring&pinon, it can cause sprages to fail
2. Driver error. In the heat of competition/excitement a driver could accidently nuetral-drop the transmission. I know what your thinking, I've never done that. But it could happen.
3. If the carb or ignition causes a back-fire and the car noses down and picks back up, or if you get in and out of the throttle while in first gear, you can damage the sprage.
4. If the car hooks, then the tires spin, then hooks again, the sprage can fail. And I know none of us have EVER had traction probs. (yeah, right)
5. Doing burn outs, starting in first gear is the biggest no-no of all. Burn outs should be done starting in 2nd gear and shifting into 3rd gear.
All 5 conditions are while in first gear.