Mack trucks sure are tough! This 1972 Mack Truck performs a wheelie with a load of logs.

This Mack has a two stick Spicer 5x4 transmission and a V8 Detroit engine..

Com: old truck : R Model Macks as well as the sound of a 2-stroke Detroit Diesel.

I was at a truck show 12 years ago and saw a 1978 Mack R600 with a 12V71 Detroit Diesel & a Fuller 13-Speed.

Needless to say, it was my favorite truck at the show. I love the growl of the old Detroits.