I just had a 9.5” rebuild by Dynamic. They tighten it up quite a bit to make it more streetable and handle the big block tourqe. They also updated the bearings and sprag. I just drove the car yesterday since the change and it seems much better. Give them a call, Shane is the phone tech guy, Frank is busy building stuff. Price was less than I expected and once they got to it i had it back in a few days.
Another option would be to put a new cam in that motor. Then you’ll know exactly what you have. If you don’t have a number or cam card it’s a guessing game.
