The Fastest Diesels In The World Are Coming…

…And four-wheel drive burnouts, 3-second eighth-miles, and fresh records are coming with them. Next year’s Outlaw Diesel Super Series schedule has been released and, in conjunction with four brand-new classes, all the right pieces are in place for a blockbuster season of diesel drag racing in 2025. The first weekend of May, Rudy’s Spring Truck Jam returns as the kickoff race of the season. Four weeks later, UCC/ODR commences in Indy, followed by a trip to Bowling Green, Kentucky in July. In August, the annual Scheid Diesel Extravaganza will once again host ODSS racing. Then for the season finale, the action returns to Pennsylvania for the second Snyder Performance Engineering Outlaw Finals event.

May 2-3: Rudy’s Spring Truck Jam | Rockingham Dragway—Rockingham, NC

May 31-June 2: Ultimate Callout Challenge/Outlaw Diesel Revenge | Lucas Oil Indianapolis Raceway Park—Indianapolis, IN

July 18-19: Outlaw Diesel Drags | Beech Bend Raceway—Bowling Green, KY

August 22-23: Scheid Diesel Extravaganza | Wagler Motorsports Park—Lyons, IN

September 19-20: Snyder Performance Engineering Outlaw Finals | Keystone Raceway Park—New Alexandria, PA

From The ‘Strip

One Last Hurrah For Dante Delaney’s LMM

Everyone likes to get that final hit in before the end of the year, and Dante Delaney is no different. He recently brought his 9-second LMM Duramax to the track one last time and it proved worth it. Fitting his GMC with 28’s for the first time (Hoosier 28×10-16), the truck rewarded Dante with a new personal best eighth-mile, a 6.30 at 113 mph. The truck also coasted to a previous personal best quarter-mile of 10.2. This offseason, Dante’s plans include extensive suspension upgrades and more fuel. Come spring, he’ll be gunning for a 5-second ‘660 right out of the gate.

On The Dyno

Neal Nissen’s 6.70 Index Truck Hits The Hub Dyno

ODSS regular and Cummins swap specialist, Neal Nissen bolted his 6.70 Index Ram 1500 to the hub dyno recently. With the compound turbo’d 6.7L Cummins turned up a bit, the standard cab half-ton ran through every gear while tethered to the Mainline Pro Hub dyno at Horsepower Proving Grounds. Throughout the duration of the pull, horsepower never dipped below 1,000 hp, with the truck also making 2,253 lb-ft of twist down low. Neal, who earned a top 10 finish in 6.70 Index this season (including an ET Bracket class win at the last race of the year) has considered bumping up to a quicker category in 2025, which would likely mean 5.70 Index in ODSS. Could this be the beginning of finding out how much more power he’ll need?

800+ HP Drop-In VGT

Work Stock pulling turbo anyone?! Not only is Dan’s Diesel Performance confirming that a factory long block L5P Duramax is an absolute beast of an engine, but the company is also proving big horsepower can be made with a drop-in, 66mm VGT. Using a GMC Sierra HD Denali test mule with a built Allison transmission, 100-percent over injectors, a 12mm CP3, lift pump, and upgraded intake piping, its test mule cleared 832 hp on the chassis dyno. The setup even produced 1,520 lb-ft of torque at a relatively high 2,800 rpm, which indicates a lot more twist may be on tap closer to 2,000 rpm. The Stage 2 66mm L5P VGT from Dan’s Diesel Performance retails for $2,895.

OEM News

GM Recalls Nearly 462,000 ‘20-‘22 Model Year Diesel Trucks

Late last week, General Motors issued a recall for more than 461,000 diesel-powered full-size trucks and SUV’s. The sizeable recall applies to 2020 to 2022 models, and both the 6.6L Duramax L5P V-8 and 3.0L Duramax LM2 I-6 are included. The issue? A control valve within the transmission can fail, invoking harsh downshifts and/or causing the rear wheels to lock up. The latter problem increases the risk of a crash significantly. GM has stated that the defective control valve can wear prematurely, eventually causing the valve to lose its ability to hold pressure. Luckily, a simple software update for the transmission control module fixes the issue.

Written by Mike McGlothlin