My 360 Engine is running reverse once turn off.

Most of the time it's a result of not enough initial timing which cascades into crutches in other systems, like the throttle blades too open to compensate (idle solenoid garbage to correct).

If the car doesn't start with the flick of the key, it's not likely got the right initial timing on it. Ever been to a mopar car show and heard gear reduction starters cranking for what seems like days while the driver has to floor the pedal to get them to start? Yep, that's another symptom.

JMO, if the engine doesn't have at least 14* of idle timing, it's probably a hampered tune up. Even stock 318's like 14*, add a hotter cam and the fun starts!