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Four months of preparing for the highest payout drag race in diesel history. That’s what it took for Matthew Parker to go rounds with some of the fastest spec turbo builds yet assembled. Friday at Ultimate Callout Challenge, the talented Texan and his common-rail Cummins-powered second-gen took on all comers and eventually took the win in the final round against hard-charging Canadian, Stephen Grundke. The reward for bringing such a well-tested, tried, and true Seventy 2 Fast truck to Indianapolis? $70,000 in cold, hard cash. Is this the beginning of high-dollar, spec turbo class racing in diesel? If the competition looks like what we saw in Indy, we certainly hope so!
Source: https://www.facebook.com/matthew.parker.125323
Backed by Power Driven Diesel, aided by former Ultimate Callout Champion Josh McCormack, and putting his own skills to good use, Myer Stump not only survived UCC 2026, but thrived. Second Place on the drag strip (a 4.90-second eighth-mile at 155 mph), Second Place on the dyno (3,620-rwhp), and a dominant 355-foot performance during the sled pull made his path to victory possible. Of course, the Power Driven wet, deckplate 6.4L Cummins under the hood never skipped a beat throughout the weekend—not even when it was forced to ingest 144-psi of boost. Without question, Myer turned in one of the more dominant UCC performances to date.
Source: https://ultimatecalloutchallenge.com/
In addition to UCC and the 72 Fast race, the Firepunk-presented ODSS Outlaw Diesel Revenge also went down over the weekend in Indianapolis. New for 2026, the event was a points crossover affair, where competitors could earn points for both the Outlaw Diesel Super Series and the National Hot Rod Diesel Association based on how they finished. So how did things finish? Michael Cordova took top honors in Top Diesel, Nathannial DeLong won Super Diesel, Phillip Franklin got the W in Pro Truck, and Ryan Reiser was victorious in 5.90 Index. In 6.70 Index, Brent Allred stole the show, while Matt Maier won 7.70 Index and Nick Morris left town the winner of the ET Bracket category.
Source: https://www.outlawdieselss.com/
A move that didn't seem possible due to the climate in CA, Roush’s S650 Mustang supercharger kit is now 50-state emissions legal, giving buyers in all states, including California, a compliant path to more power for their 5.0's. That's an 810 horsepower and 630 lb-ft of torque package, and the cops in CA won't impound you for it. The system uses an Eaton TVS R2650 supercharger developed with Magnuson and runs up to 13 psi. Who knows, maybe we'll get a new blower pulley made to bump that number up even more...
Times, they are a changin’… And the proof is a common-rail Cummins built by Haisley Machine for the 3.6-inch smooth bore (i.e. Pro Stock) diesel truck class. In years past, you would’ve found a sizeable mechanical pump hanging from the front cover of a Haisley engine of this caliber, not two CP3’s. Above the billet block, you’ll find a 24-valve head with wires running to each injector—and those injectors are controlled by a MoTeC M142 stand-alone ECU. This bullet will be humming away under the hood of the “Ranch Hand” second-gen Dodge puller all summer long—and is likely belting out well north of 2,000 hp.
Source: https://haisleymachine.com/
The bar has just been raised for the 10-speed Allison crowd. This factory short block L5P Duramax owned by Full Throttle Diesel was strapped to the Northwest Dyno Series SuperFlow to do one thing, and one thing only—set a new record for the 10L1000. The combination of an S480 over the stock VGT, 200-percent Exergy Performance injectors, a 10mm CP3, a healthy shot of nitrous, All In Truck Performance tuning, and a built Allison with a DHD valvebody resulted in a mammoth 1,314 hp at the rear wheels. Hopefully this is a sign of things to come for the 10-speed Allison—a platform that has no shortage of weak links from the factory.
Source: https://www.facebook.com/profile.php?id=61567564724219
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