Built by Ray-Go Manufacturing in Minneapolis during the late 70's, the Giant was raw American horsepower applied to the problem of ever-increasing project sizes. Only 7 were made with most exported to Canada.

Known primarily for articulated scrapers and compaction equipment, Ray-Go took what they knew and made it bigger and badder. They essentially suspended a dedicated grader frame between two scraper tractor powerplants, each with a 318HP two stroke Detroit and creating the distinctive double-articulated steering system.

Youtube video showing the process of starting up one of these beasts after decades sitting in the weeds and doing some 'light' dirtwork: https://www.youtube.com/watch?v=a7heLIyh3Fg