’57 Chevy: A Little Info On Manual Transmissions

In 1957 Manual transmissions were limited to three-speed, column shifted units (with synchromesh in second and third gear only). The Powerglide’s shifter went P N D L R while the Turboglide’s was P R N D Hr (although the ‘Hr’ was changed early in the production series to ‘Gr’-Grade Retarder because of drivers’ mistaken belief that ‘Hr‘ meant High…