Autocross Considerations
The specifications for most high-performance torque converters relate dragstrip performance potential, which doesn't help much when selecting a converter for autocross use. Although many of the same considerations apply, autocrossing calls for a somewhat lower stall speed than drag racing. A Corvette set up for autocrossing won't have a drag racing-oriented Corvette's launch capability (due to tires and suspension) so it's usually best to keep stall speed well below an engine's torque peak. Autocrossing also involves acceleration and deceleration, and a tighter converter offers quicker response during throttle transitions.

By The Numbers
If you're not familiar with dragstrip elapsed times and trap speeds, you'll understandably view improvements of a few tenths of a second and 2-3 mph as insignificant. But if you've ever tried to improve your Corvette's dragstrip performance, you know it takes a good bit of effort to cut e.t. by a tenth and increase trap speed by 1 mph. An improvement of 0.30 second and 6 mph is huge; and, as the accompanying chart demonstrates, that's just what the right converter can deliver.

Baseline SSFighter Breakaway
60-foot 1.773 1.772 1.801
330-foot 5.283 5.227 5.298
660-foot 8.259 8.151 8.199
1000-foot 10.853 10.702 10.709
1/4-mile 13.062 12.872 12.752
1/8-mph 82.210 83.630 84.480
1/4-mph 100.920 103.730 106.680
Mickey Thompson Performance Tires
TCI Automotive
Silver Dollar Raceway