Mack Super-Liner

The Mack Super-Liner is a model line of Class 8 trucks produced by Mack Trucks. Produced in North America from 1977 to 1993, the model line was a conventional-cab tractor configured primarily for highway and vocational applications, serving as the flagship conventional of the Mack product line in North America. Following its 1993 discontinuation, the Super-Liner was replaced by the CL700; today, its closest equivalent is the Mack Anthem.

Since 1980, the model line has been sold by Mack Trucks Australia; currently, it is in its third generation.

The development of Super-Liner began life in the early 1970s under Brockway Motor Company, a subsidiary manufacturer of Mack Trucks. While using the cab of the Mack R-series in its production, Brockway competed nearly directly against Mack in heavy-duty truck sales. Following the introduction of the long-hood "western" Mack RS700, Brockway commenced development of the "Super-Liner", featuring a squared-off hood (to accommodate a larger radiator/engine).

In 1977, Brockway Motor Company was closed down by Mack Trucks, following labor disputes that ended its production. While much of Brockway was liquidated, Mack continued further development on a set-forward axle Super-Liner, entering production by the end of 1977. As the design already used a Mack RS cab, the Super-Liner saw only minor detail changes before entering production, internally designated as the RW700.

Introduced during 1977, the Mack RW700 effectively replaced the RS700 "western" conventional. While sharing the cab of the R-series tractors (along with its model designation), the Super-Liner was built on the frame of the WR Cruise-Liner COE. The first-generation Super-Liner is externally distinguished by four round headlights (in a rectangular housing); the interior has a 3-spoke steering wheel.

For 1985 production, Mack introduced the second-generation Super-Liner, named Super-Liner II. Visibly similar to its predecessor (with the exception of four square headlights), the Super-Liner II adopted the full-length frame rails of the MH Ultra-Liner COE. Alongside detail changes to the interior, a smaller 2-spoke steering wheel was added.

Following 1993 production, the Super-Liner RW-700 was discontinued. As its replacement, Mack introduced the CL700, a longer-hood version of the CH600; though shifting to a set-back front-axle layout, the CL continued the use of the Super-Liner frame.

To commemorate the introduction of the Super-Liner II, Mack produced the Magnum special-edition series of Super-Liner IIs and Ultra-Liners for 1985. Designed as an appearance package, the exterior of the Magnum Super-Liner was black with Magnum wording on the hood, red/orange cab striping, and a red interior. The standard engine was the Mack E9 diesel V8 (400-500 hp) with a 9-speed Mack T2090 transmission.