The data pointed to 750 horsepower as the ceiling. That number, Probst explained, delivered the desired competitive lift without demanding engine re-development. When the series transitions to that ...

We’ve got two identical cars, one makes 1000 hp and 500 lb-ft, the other 500 hp and 1000 lb-ft. The question is: who wins in a quarter mile? Horsepower or torque? That’s what we’re figuring out today, ...