While each have their time and place - as we’ll discuss later - the Turbo 400 itself has the heads-up, outlaw drag racing market cornered, with high-tech, modern versions of the original Turbo-Hydramatic roaming the landscape from manufacturers just like Maryland’s ATI Performance Products Inc.ĪTI Performance Products has been at the forefront of aftermarket Turbo 400 development with their two- and three-speed variants, housed within their own aftermarket case. These days, that very same, 50-plus year old design is still used far and wide in drag racing, but more commonly, what was once a three-speed is now simply a two-speed, drawing direct parallels between it and another of General Motors’ famed transmissions: the two-speed Powerglide.
Those key points, as history has shown, were not lost on the racers of the era, who found the Turbo 400 to be an excellent piece for the strenuous conditions they put vehicles through. The transmission was quickly heralded for the number of advantages it delivered, including its impressive strength and the efficiency of its planetary gear design. The vaunted Turbo-Hydramatic TH400 transmission, known more commonly as the Turbo 400, was developed back in the early 1960s - making its debut in 1964 model year Cadillacs - as a three-speed automatic transmission.
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