The latest addition to the Mack Trucks Historical Museum is this 1984 R Model tractor, originally custom-built for Johnny Prescott and Son Oil of Concord, New Hampshire.

I’ve run several Mack trucks. My brother-in-law had a mid-1970s R model with a 300-hp Maxidyne engine and five-speed Maxitorque transmission. We called it a “purebred,” because it was built ...

Volvo’s VNR 640 decked out with a patriotic paint scheme honoring all branches of the U.S. military and Mack’s custom Jack Mack were unveiled for the annual Ride for Freedom in Washington, D.C.

I learned the craft on a 1975 R-Model Mack, and I've had a soft spot for the R-Model ever since. It wasn't very roomy. The windows were small, and climbing out of the thing could be perilous.

Actually it’s a custom creation built by Mack Trucks for Sultan Ibrahim Ismail of the Malaysian state of Johor, who […] Skip to content. All Sections. Subscribe Now. 67°F.