86' Thrall High Cube Box Car

Prototype Information

Thrall entered the 86-foot hi-cube market in 1963 by constructing two prototype cars. Between 1964 and 1973, the company assembled 3,544 of these cars, placing them between Greenville and Pullman-Standard in total production volume. Thrall focused on the underframe assembly in-house but outsourced major components like roofs, ends, and doors to Stanray and Youngstown. Interestingly, a lack of floor space forced Thrall to outsource the car sides as well. International Steel Company (ISC) provided welded sides, while Youngstown Steel Door (YSD) supplied riveted versions for later production runs.

These outsourced sides became the primary way to identify different Thrall models. Researchers like Stephen Mayberry eventually categorized these into five distinct 4-door designs and two 8-door designs based on side construction. ISC produced all the welded variants, using either single or double welds at the interior posts. When Thrall returned to production in 1973, ISC had left the car-building business. Thrall then turned to Youngstown, which shifted the design to the riveted sides seen on the final batches of these massive freight cars.