Ultimate Callout Challenge 6.7L Cummins

With nearly 2,100 horsepower and more than 3,000 ft.-lbs. of torque on tap, Armor Inc. Diesel & Suspension's 6.7L Cummins engine makes the shop's 2007 Dodge the fastest diesel truck in Canada! Find out what goes into this Ultimate Callout Challenge diesel build!

GM 604 Engine

Steve Hendren can thank his dad, Bill Hendren, for teaching him everything he knows about engine building. In fact, the whole Hendren family is an integral part of the evolution of Hendren Racing Engines in Rutherfordton, NC. It's that family formula that helps crank out 140-160 engines a year like this GM 604 engine. Find out what goes into making this a mean race engine!

Precision Engine Machine Co.

Are you one of America’s Best Engine Shops? If so, see how you might stack up against Precision Engine Machine Co. located in Hyattsville, MD. They have entered the Vintage category.

6.7L Ford Powerstroke

Growing up in rural Indiana means you grow up around a lot of diesel trucks. As an Indiana native, it was only natural that John Roberson of Outlaw Diesel Performance developed a passion for fixing and modifying diesels such as this 6.7L Ford Powerstroke. Find out what went into this sweet build.

358 cid National Late Model Chevy Engine

With an extensive background in building race engines, Mike Hedgecock has been running Eagle Racing Engines for nearly 40 years! He now runs the shop with his son and grandson churning out complete engine builds like this 358 cid National Late Model Chevy engine. Find out what goes into these race-ready builds!

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