Don Hummer Trucking

Big Al is King

Posted on 04/17/2015 at 01:02 PM by Dena Boelter

During the late 60’s and early 70’s, Allis-Chalmers debuted into the over the road truck market.  The variable RPM in a truck engine was something that the lower end of this engine couldn’t handle and as a result crank and block failures became common. In the end, all owners were offered a new 250 Cummins and the "Big Al" became history!  

Check out some of the marketing materials created to promote this purple engine!

Submitted by Mike McDonald

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