383 eating starters

[Zapan00]

I've had my car back from the shop (after over a year there) for two weeks now and it has eaten 3 high torque starters in that time frame. The one that was on the car when it got shipped to me from the shop died starting it to get it off the truck.

It looked to me like there were too many shims in it, causing the starter gear to engage too shallow resuming in a horrible grinding noise and failure to start. I've since installed 2 starters on my own with what I think is proper spacing but after a week of every day starting and driving I start hearing the horrible grind, followed shortly by the starter no longer engaging. I've tried the huge old starters as well as a starter from a 1998 350.

The car has a 383 stroked and a 700 r4 trans. I'm not sure of the gear count on the flywheel but it uses the offset bolt pattern for the starter. Any suggestions to fix the issue would be helpful.

I refuse to call the guy who worked on the car to find out anything since he lied/ stretched the truth about nearly everything he did on the car.

Thanks