Welcome to Sleeperville: The Stock-Appearing 550-HP F-250

Not everyone sets out to perform a general repair on their truck and then proceeds to add 300 hp to it—but that’s exactly what David […]

The Truth About Transmissions

Dissecting the Allison 1000, Dodge 47/48, and Torque Converters with Dave Goerend While Diesel World Editor Adam Blattenberg was over getting a crash course in […]

Ultimate Working Heavy Hauler— Duramax Edition

Improving Hauling and Fueling Capabilities We introduced this 2003 Silverado 3500 LB7 Duramax in the December issue to show you what it takes to convert […]

ULTIMATE WORKING HEAVY HAULER-DURAMAX EDITION

PART FOUR: EXHAUST BRAKING AND FLUID PERFORMANCE You have that 35-foot stock trailer in tow, loaded down with fattened calves headed for the auction, but […]