They didn't make many good Mack's after 79 the Superliner was a good truck also 1966 the first R model was made it's still in existence the 285hp maxidyne is a good engine same engine as the 320hp cool power they have a lot of torque and are geared very well the latter engine the E6 econodyne and the last had the EA 7
What country are you in
They didn't make many good Mack's after 79 the Superliner was a good truck also 1966 the first R model was made it's still in existence the 285hp maxidyne is a good engine same engine as the 320hp cool power they have a lot of torque and are geared very well the latter engine the E6 econodyne and the last had the EA 7