The Road To 4,000 Horsepower

It’s a good thing the folks at Randy’s Transmissions know how to build a tough slushbox—because this engine is going to push the limits of everything around it. On a quest to make 4,000 hp with the company’s flagship vehicle, the notorious ’06 Dodge Ram 3500 dually known as “Red Delicious,” owner Randy Reyes chose Fleece Performance Engineering’s billet-aluminum block for his engine’s foundation. An Industrial Injection stage 4 head and side-draft intake manifold, as well as a dry sump oil system tell us this engine means serious business. We suspect a triple turbo setup will once again supply boost. Stay tuned.

Exotic Engine Tech

The Common-Rail 7.3L That Never Came To Be

Years ago, a project was in the works to get the most out of the largest displacement diesel engine ever offered in a pickup truck, the 7.3L Power Stroke. Doing so meant the HEUI injection system went away—and back in 2014 Tommy Hassler was knee-deep in a common-rail conversion project with the potential to unleash the 444 ci V-8’s true potential. The engine utilized 6.4L piezo injectors and modified K16 (6.4L) high-pressure fuel pumps, a custom 7.3L IDM and modified PCM, de-lipped 7.3L bowl pistons, and made 1,200 hp on a single 3.0-inch (map groove) turbo. In a genius suggestion, Ellington Diesel & Fab’s Tristan Ellington recommended the project be revisited—this time with Duramax-based solenoid injectors and a MoTeC stand-alone…

Racing On A Budget

A 10-Second Diesel Car For $8K?

Project Not So Slow is a Youtube channel dedicated to building and showcasing the ultimate sleeper vehicle: a 190D model Mercedes-Benz. It’s a luxury sedan that’s blasted through the quarter-mile in 10.18 seconds at 137 mph. But that’s not even the best part. The grand total on the build is just $8,131.50. It all revolves around a 240,000-mile OM606 engine, the near-bulletproof 3.0L inline-six that’s lone internal upgrade includes stiffer valve springs. Other keys to the car’s horsepower-making puzzle include an 8.5mm injection pump, a T4 exhaust manifold from The Kangaroos Team, a Facebook Marketplace BorgWarner S364.5 SX-E, a water-to-air intercooler, nitrous, and a 722.6 transmission. It’s yet another example of the tough-as-nails OM606 helping a lightweight vehicle print some very impressive timeslips.

Anatomy Of A 5.70 Index Truck

How Cody Helms’ 12-Valve Keeps Pace With The Common-Rail Competition

He’s been keeping up with (and even breaking out) against the common-rail competition all season, but now we know why Cody Helms’ reworked 12-valve second-gen is performing so strong in 2025. Over the winter, and thanks to Blake Miller’s handiwork at Aftermath Diesel Motorsports, the truck was back-halved and received some front tube-chassis work. The old Dodge was also treated to a new roll cage certified for 8.50s, new rack and pinion steering, new front and rear four-link suspension, fresh wiring and plumbing, a brand-new turbo (and intercooler piping), and a lightened hood, fenders, and bumper. Whereas Cody was leaning on a much heavier truck in order to try to run 5.90s last season, now his biggest problem seems to be slowing the truck down enough to stay in the 5.70s.

Transmission Tech

Your 47/48RE Build Deserves The Best

From input to output shaft, one company has the four-speed automatic behind your Cummins covered. And when you or your preferred Chrysler transmission guru is fortifying a 47/48RE, the proper apply piston matters. Goerend Transmission’s 0.780-inch tall (vs. 0.840-inch on the earlier style), rear forward clutch apply piston is the only style apply piston on the market that should be used in conjunction with the heavy Belleville spring. The company’s apply piston is the shorter, late-style piston that was specifically designed for the correct clutch stack-up and proper spring preload. All of Goerend’s apply pistons are precision machined in-house at its Saint Lucas, Iowa headquarters.

Written by Mike McGlothlin