OK what is the red line on the engine and where do you shift the car.I did get it swapped which is why the car was faster. The converter was advertised as a 3200-3600 stall. I started out at 3000 then dropped to 2900 then again to 2800. Car felt like it was spinning while on the 2-step but the log showed it wasn't. Maybe it was spinning to low to read, idk. I didn't have any cameras set up or have someone there watching me. I need to talk to the converter company to see what they think. I was really hoping it would stall higher.
If you are on the 2 step with the brakes locked it should not spin.
Drum or disk rear brakes.
Flashing a converter is hard with out a Trans-Brake.
If you roll out slowly and stab the throttle what does the tach do. You should feel a launch somewhere in the stall band towards the top.