Another Record For The Duramax!

The Duramax platform has been killing it in the news cycle lately, and now it’s Justin Goode’s turn. Over the weekend, while competing in the N/T Pro Truck class at Lights Out 17, his lightweight LML set a new 1/8-mile ET record for a 4×4 Duramax. During a test hit last Wednesday, the truck rocketed out to a 1.29-second 60-foot, made it to the ‘330 mark in 3.145 seconds, and ultimately covered the ‘660 in 4.63 seconds (at 163 mph). After an entire year of seemingly taking one step forward followed by two steps back, Justin and his awesome team have finally persevered, and they (as well as us) believe this is only a sign of bigger things to come. In Justin’s own words, “Breaking the Duramax 4×4 record is not the finish line. It’s just the beginning.” Additional highlights from Lights Out 17 can be found here.

The (Common-Rail) Quest For 3,000 HP On Fuel

It’s been a busy winter at Dynomite Diesel Products. In addition to Lenny Reed and team’s usual fuel injector and pump workload, a wild U.C.C. project is gradually being pieced together. The Cummins DDP plans to campaign in Indy has spent time on the dyno at Perkins Diesel and, with the help of Chad Perkins, they’ve learned a lot—possibly even what it takes to push a common-rail engine to 3,000 hp on fuel. A 5.25-inch Hart’s turbo turning out 118 psi of boost (and a cool, 114 psi of drive) has certainly made things interesting, as has the CGI block supplied by Hamilton Cams, which seems to be taking the abuse and asking for more. Stay tuned for more on this story in the months ahead…

At The ‘Strip

A High-Tech 7.3L—With Records Incoming

Jelibuilt Performance just took delivery of its Kill Devil Diesel-built 7.3L Power Stroke—and it’s like no other 7.3L we’ve seen. Under the valve covers, you’re greeted by brand-new Jesel rocker arms, part of an rpm-friendly valvetrain that includes Jesel solid roller lifters and KDD beehive valvesprings installed in the company’s high-flow, ported Delta Series heads. A Brian Gray BIG competition camshaft made the cut, too. As for the 7.3L’s foundation, it all starts with a CGI block and bed plate from Hypermax Engineering. Combine that with Carrillo forged-steel rods, forged-aluminum Mahle Motorsport pistons, ARP fasteners throughout, and KDD’s precision machining and assembly services and you get what is arguably the highest potential, HEUI-fired 7.3L Power Stroke ever pieced together. Catch Jelibuilt’s engine in action at Diesel Truck Wars!

Transmission Tech

The Little Things Can Make Or Break Ford’s 10R140

After diving headfirst into the 10-speed TorqShift in ’20-newer Super Duty trucks, WP Developments has built countless trouble-free transmissions for its customers. But when three units came in, back-to-back-to-back, with the same issue (a code claiming to be an F clutch solenoid stuck in the OFF position), WP’s failure analysis department went to work. What they found was that just one tiny little seal can make a huge difference in the performance of these new 10-speed automatics. The height difference in the two seals shown above mean the difference between properly sealing pump pressure within the case and not. Now combine the problematic seal with Ford’s exclusion of a way to monitor desired vs. actual pressure and you get a real head-scratcher. Thank goodness company’s like WP Developments are willing to dig into these headaches and solve them—not only for their own customers but for the rest of the industry.

Goerend Recognized For Its Innovative 48RE & 68RFE Components

Not one but two of Goerend Transmission’s products were recently voted into Transmission Digest Magazine’s Top 20 Shop Products and Tools of 2026. The Saint Lucas, Iowa company’s replacement 48RE oil pump body, the first true drop-in product of its kind, made the list. Each pump body comes with a new, pre-installed torque converter seal and bushing, plus a vent baffle, six new pump cover bolts, and fully threaded oil circuit end plugs to prevent the risk of them blowing out. On top of that, Goerend’s 68RFE channel plate—also the only aftermarket piece of its kind, and a unit complete with the 8258 pressure tap adapter pan required to check vital valve body pressures—made the list.

Written by Mike McGlothlin