Everything To Know About The 2026 Seventy2Fast Class Rules

Massive payouts bring out the fiercest competitors in diesel drag racing. When the stakes hit $70,000, building a competitive truck requires parsing some incredibly strict regulations. Lavon Miller recently sat down to address a flood of questions from racers preparing for the 72 Fast class showdown. Clarifying the technical rulebook well ahead of time ensures a fair fight and prevents unnecessary trackside drama.

Regulating Engine Management Systems

To control these massive Cummins powerplants, officials strictly mandate the use of an original equipment manufacturer (OEM) computer. While competitors can legally run stand-alone systems for data logging or transmission control, tech inspectors will aggressively verify the primary fuel management. Lavon explained: “If we come back after a round, come across the scales and we reach in and unplug your Motech and your truck shuts off, that will be a DQ.” He also clarified that nitrous controllers pass inspection solely to execute time-based shifting applications.

Managing 72 Fast Class Weights

Pushing a heavy street truck past 1,000 horsepower demands serious safety considerations. Because racers must meet a 6,000-pound minimum weight, builders frequently bolt heavy ballast directly to the chassis. However, officials require permanent welding for any massive lead additions. Lavon noted: “If you’re adding more than 500 lb, you need to fill a lead bar and weld it in to where it looks like it’s part of your chassis or your frame and it’s not a weight balance.” To further control class costs, organizers selected a specific VS Racing turbocharger standard.

Preparing For Track Logistics

Anyone showing up unprepared guarantees himself or herself an early exit from this high-stakes shootout. Event organizers strictly banned any practice passes at the primary facility prior to the first official round of qualifying. Once staged, drivers will face an instant green light featuring a randomized delay sequence designed to eliminate guessing. Furthermore, protecting the racing surface remains a massive priority for the track crew. Officials strongly urge competitors to utilize belly pans to catch fluid leaks, because dropping oil on the asphalt completely destroys the race schedule.

The Future Of The Seventy2Fast Class

The diesel community thrives on fresh engineering challenges, and this event proves that builders love transforming heavy street pickups into dedicated competition vehicles. For the shootout to succeed, however, every team must respect the strict technical boundaries laid out by the organizers. These early clarifications give privateers the exact guidance they need to lock in their complex mechanical setups. Come race day, fans are guaranteed to witness some of the tightest heads-up drag racing of the year.