1966 A904 loses all gears overnight

It will be interesting what happened here. Trannys usually don't work good one day and break while setting overnight. You can loose foreward gears buy breaking a planetary but you need 500 horse and a heavy car with lots of bite. You will still have reverse though. LOL (a friends 70 Superbee with a +.030 440 dyno'd at 497 hp.)