![]() Through 1953, the automatic was sluggish in off-the-line acceleration. GM marketed the Powerglide as a "shiftless" automatic on the 1950 Chevy models, although drivers had to shift one gear. Although the Powerglide was the first automatic, it wasn't the best by a long shot. When a fire damaged GM's Hydramatic automatic transmission factory in 1953, GM fitted its Pontiacs and Oldsmobile with the Powerglide. Ford introduced its automatic in 1951 and Chrysler in 1954. General Motors was the first of the Detroit automakers to offer an affordable automatic transmission for its cars. By considering these factors, you can successfully identify a Powerglide transmission and understand its specific characteristics. The vacuum modulator, input shaft, driveshaft, and torque converter are all integral parts of the Powerglide transmission, while its application can be found in various aspects of the drivetrain, driveline, and even drag racing. The source code, usually located on the side of the pan, is another valuable reference point. Examining the pan shapes, such as a cast-iron model with no pan on the bottom or a cast-aluminum model with a removable square pan secured by 14 bolts, can provide further identification. Powerglides have undergone various upgrades over the years, so understanding the specific model and any modifications can help determine its features and compatibility with certain vehicles.Īdditionally, Powerglides are air cooled, meaning they do not require a transmission cooler connected to the radiator. ![]() First, inspect the output shaft, which has a unique length and shape that distinguishes it from other transmissions.Īnother clue is the part number, which can often be found on the transmission housing or stamped on a metal tag. Identifying a Powerglide transmission involves examining several key components. The extension housing, with its typical 1 to 2 variations, is an important component of the Powerglide, connecting the gearbox to the drivetrain.įinally, for heavy-duty applications, the Powerglide typically offers 1 to 2 heavy-duty models built to withstand demanding conditions and higher horsepower outputs. The 27 spline option, with its increased strength, is typically available in 1 to 3 configurations to handle high torque demands.įor those seeking a lightweight option, the aluminum Powerglide typically comes in 2 to 4 variations, offering a balance between performance and weight reduction. The tailshaft options for the Powerglide typically range from 1 to 3 variations, offering flexibility in drivetrain configurations. ![]() Racers often opt for the Powerglide transmission due to its reliability and performance. In terms of manufacturing locations, the Cleveland plant typically produces 1 to 2 Powerglide models. The cast iron Powerglide, known for its durability, typically comes in 1 to 2 configurations, making it a popular choice for Chevy II vehicles. When it comes to the turbo option, the Powerglide typically offers 1 to 3 variations to suit the specific needs of racers.
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