The most notable difference between a bracket race Powerglide and a Pro Mod version is the use of an aftermarket transmission case in the higher horsepower applications. The lockup functionality acts like a third gear. The lockup torque converter is especially important in a Powerglide transmission since you are in high gear for a long time. This has helped racers like ATI flag-carrier Chris Rini reset the record books and propel automatic transmission cars deep into a territory once dominated by manual transmission cars. In recent years, high horsepower racers have started to move towards lock-up torque converters in an effort to put every last drop of power to the ground. Since the Powerglide is very popular among racers, the price of components is also very reasonable due to the mass production of components and accessories related to the transmission. According to Beattie, the Powerglide transmission also requires a third less power to run when compared to conventional 3-speed transmission, thus making it very efficient at transferring power to the wheels. The Powerglide transmission has been a long time favorite of the bracket racing crowd due to the simplicity of the transmission and the lightweight design. The canister on the front of the housing is an overflow catch can to prevent any fluid from reaching the tires. SuperGlide 4 transmission shown with billet pump and input shaft.

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