The Ford L-series is a range of commercial trucks that were assembled and marketed by Ford between 1970 and 1998. They are also known as Ford Louisville or, for the 1990s aerodynamic models, Ford Aeromax. The first dedicated Class 8 truck produced by the company, although Ford had been producing "Heavy Duty" trucks since 1948 and their "Super Duty" lineup since 1958. The L-Series was the successor of the F-900/F-1000 Super Duty and the Ford N-Series. The line encompassed a wide range of models in GVWR Classes 6 through 8, as either straight trucks or as semi-tractors, with vehicles developed for medium-duty, on-highway, severe-service, and vocational applications.

The GMC General is a heavy-duty truck that was assembled by the GMC Truck and Coach Division of General Motors from 1977 to 1987. The largest conventional-cab truck ever produced by the company, the product line replaced the C/M 90/9500 trucks.