727 pop out/slip issue..

Hey guys so here's a new problem,
When the car is cold and leaving the garage , it shifts into reverse or drive just fine. You can feel it bang. It rolls a little bit, then nothing. Acts like it's in neutral, untill you Rev it a bit then it bangs back in and it's good from there on out.
The fluid level is fine. The trans is only 1 season old from last rebuild. The convertor was also new at time of rebuild Frank Lupo 9.5.
Last season it never had this problem. After I did a engine swap...

727 pop out/slip issue..
Author: admin