what 4 speed transmission is in a 1969 corvette
The '69 Corvette featured three optional 4-speed manual transmissions: the M-20, the M-21 (close ratio), or the M-22 "rock crusher" (close ratio, heavy duty). You can find out lots more about those transmissions here: http://www.nastyz28.com/chevy-manual-transmission-identification.php.
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