What Did EPA’s Lee Zeldin Just Say?
The greenhouse gas emissions proposal heard ‘round the diesel world.
Unbeatable In The Dirt
Unkillable transmissions, a 2.6 class Cummins dominates the Indiana Pulling League circuit, a bullnose Ford gets a P-pumped 12-valve, and greenhouse gas emissions may be going away.
Under Bed Fuel Filter Upgrade For ’19-’24 Rams
Trade in plastic for aluminum, simplify water separator changes, and cut your filter costs in half with Fleece Performance Engineering’s latest bolt-on solution for ’19-’24 Rams.
Full Tilt Peterbilt—The Triple-Turbo, CAT-Powered 359 That Runs 10s
Inside a homebuilt, 3,000hp Caterpillar-propelled Peterbilt, the first billet Cummins crankshafts hit the market, and a historic diesel Pro Mod goes up for sale.
Fireworks At Firepunk
Exploded turbos and a blown up LML Duramax, a new 6R140 record, a first-gen Cummins dominates the dirt, and a drop-in VGT that supports 945-rwhp.
Small-town Sled Pull—Big Name Competition
PPL pulling comes to Lincoln County, Missouri—and brings the Super Stock and Limited Pro Stock Diesel Trucks with it.
Inside The New ZF 8-Speed
Randy’s Transmissions breaks the seal on the new automatic behind the ’25 Cummins, Jelibuilt discovers the ultimate 600hp 7.3L recipe, and truck pulling commences across America.
Holy Grail Hummer: A Duramax-Swapped H1
The ultimate H1, 11-second quarter-miles with a stock turbo L5P Duramax, NHRDA vs. ODSS, and the latest Power Stroke heads on the market.
The Road To 4,000 Horsepower
A 10-second Mercedes-Benz sleeper, a 4,000hp billet-aluminum block Cummins build, and the common-rail 7.3L that never came to be.
FP Diesel Warz 2025
Surprise wins, new personal bests, and tight races abound at Fitzgerald Motorsports Park.
Dyno Certified: Ford Puts 100 HP On The GM And Ram Competition
An 18mm Sigma, a 7.3L block upgrade, Ford’s 6.7L Power Stroke remains top dog on the dyno, and diesel drag racing from SICK Summer and FP Diesel Warz.
The Best (And The Rest) Of U.C.C. 2025: Action From the Dyno, The Pits, And The Booths
The LML Duramax horsepower record gets reset, the latest CP4 solution for the 6.7L Power Stroke is unveiled, and a brand-new Super Stock pulling truck makes its debut.
461 HP And 1,014 LB-FT At The Wheels—Stock!
Ford continues to underrate its 6.7L Power Stroke, diesels compete with PDRA, and the inside scoop on O-Line—the latest Super Stock truck on the pulling scene.
The Aftermath Of Playing With Fire! (2,000 LB-FT Stock Bottom End L5P)
Pushing a factory long block L5P Duramax to the brink, Wagler’s ultimate Cummins valvetrain solution, and Stainless Diesel’s new top-feed injector system.
Outlaw Diesel Revenge 2025
Since joining forces with U.C.C., Firepunk Diesel’s Outlaw Diesel Revenge event has grown to become the biggest ODSS race on the calendar.
Ultimate Callout Challenge 2025
From Friday’s drag race to Sunday’s sled pull—and all the parts thrashing and sleepless nights in between—there was never a dull moment at U.C.C. 2025.
Josh McCormack Conquers The Ultimate Callout Challenge
A new U.C.C. champ is crowned, ODSS drag racing from Indy, a fresh Duramax horsepower record, and the latest in CP3 technology.
2,000 LB-FT From A Stock Bottom End L5P Duramax?
1,500 hp and 10-second quarter-miles from a pair of factory long block L5P Duramax’s, ODSS race prep for Indy, and finding the limits of a 7.3L Power Stroke.
The Pullers Championship
Welcome to the Track at Holzhauers—the place where hand-picked, elite-level truck and tractor pullers battle it out in a 2-night affair.
Mission 4,000 HP: Greg A’s Billet-Aluminum Cummins Is Coming
Greg A.’s all-aluminum Cummins, the latest 6.70 Index racer, a 4BT tucked into a Jeep CJ, and we take a trip to The Pullers Championship.
Will This Truck Reset The 4×4 Diesel Record?
A veteran drag racer takes aim at the 1/8-mile 4x4 diesel record, Quality Diesel Performance hosts its annual dyno day and show ‘n shine, and a 48-hour OBS Ford build.
Next-Level 7.3L
A purpose-built, 1,400+ hp F-350—and an owner determined to make it the world’s fastest 7.3L-powered 4x4 truck.
It’s Showtime: The 2025 ODSS Season Kicks Off At Rudy’s Spring Truck Jam
The ODSS season begins in North Carolina, a 1,300hp Cummins windows a block, and American-made diesel parts are alive and well.
TSD’s New Billet Bullet
Billet block engines, Rudy’s and U.C.C. prep, and a major breakthrough for 68RFE transmission technology.
998 HP P-pumped Square Body
The ultimate old-school Cummins swap, added bling for the world’s fastest Duramax, and Cleeter’s AWD Vs RWD no prep race is locked in for October 1st.
Crazyhorse: The No-Prep, Cummins-Powered Ford That Shocked The World
From wrecked to reborn, Nathan Wheeler’s triumphant return to drag racing might just be the greatest comeback story in diesel.
The King Of All 4×4 Diesel Trucks Just Hit The Market
Multiple Duramax records set, dragster testing from Wagler Motorsports Park, and the fastest 4x4 diesel truck in existence goes up for sale.
World’s Fastest 4×4 Duramax
The 4x4 Duramax record changes hands, WP Developments breaks ground on a Super Stock pulling project, and we take a look inside a 1,500 hp, SPE-built 6.7L Power Stroke.
2025 Summit 7.3
More than just an event that celebrates an engine platform, Summit 7.3 is an annual gathering where enthusiasts, business owners, mechanics and manufacturers come together to improve the industry.
High Stakes 3.0
Super Duty body, second-gen Dodge chassis, deck-plate 6.7L Cummins—and built to win. Nick Zaenkert’s Ford is putting the Limited Pro Stock field on notice.