Jake Rodriguez’s Cummins-powered Ram went to 2,695 horsepower on the dyno at the Ultimate Callout Challenge in Indianapolis, then let go before the run could stretch any farther. The third-gen truck was still pulling hard when the engine failed after the nitrous controller went down, ending one of the weekend’s biggest numbers in a cloud of carnage.

That kind of number would turn heads anywhere, but Indianapolis is where diesel teams gather every year to see how much power they can squeeze out of a truck and keep it alive long enough to matter. JBJ Diesel, the Idaho-based team behind Rodriguez’s red single-cab, has already shown it can push the platform well past the 3,000-horsepower mark, and the same truck hit 3,342 hp at last year’s Diesels in the Mountains contest.

The run was impressive enough that one post from The Drive called it a “Wild run for JBJ Diesel #ultimatecalloutchallenge #dieselperformance #diesel #dieselpower #carnage,” but the number only tells part of the story. Poor Boys Diesel ultimately topped the dyno chart at the UCC event with 3,825 horsepower, underscoring how deep the field had become and how quickly the competition moved once the engines were loaded and the rollers started biting.

What made Rodriguez’s failure sting was how close the truck seemed to be to something even larger. It was performing beautifully and still had revs left when the nitrous controller failed first, cutting off the chance to see how much more the Cummins could take before the engine itself gave out. In that world, that difference matters: the run was over not because the truck had run out of promise, but because one critical piece stopped working first.

Rodriguez and his crew kept the weekend alive by swapping in a spare engine for the remaining UCC rounds, including a sled pull the next day. That left JBJ Diesel with another year to prepare for UCC 2027, and with a clear target: come back with a truck that can chase bigger power without ending the pass on the dyno before it has a chance to finish it.