Andy, do you know which converter company and model yours is?
I had Chris at Contintental converters make me a custom 10 inch street and strip converter for my old pump gas Duster, that converter would foot stall right at 2300 RPM before pushing the 165x15 front tires through the staging beams, it would flash stall around 4200 to 4400 RPM depending on the track elevation and weather conditions.
I broke it and install a Turbo Action 8 inch SS/AH Hemi foot brake converter I had in stock and that converter was way better on the street and at the track That change pick up my car at Madras .2+ ET and over 2+ MPH in the 1/8 mile , a little more gain at Woodburn also
It drove real nice at light part throttle on the street and at the track and would flash stall up around 5200 RPM in high gear at WOT from a 35 to 45 MPH roll
I think it had around 9% slippage across the finish line in the 1/4 mile