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  1. #1
    Join Date
    Jul 2001
    Groton, MA USA
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    1977 Black Coupe

    Default Need parts list recommended for 77 corvette transmission change from auto to 4-speed

    I plan to convert my 77 (L48) from an automatic to 4-speed transmission. My mechanic is very capable in doing this, however I would like to prepare as best I can to make this project go successful before we schedule the time and effort. I realize that this is not one of those easy projects one takes on, but I'm hoping someone could offer any suggestions and recommended resources to help me create a listing of parts needed to do it. Any suggestions?

    I have been thinking of buying a Super T-10

  2. #2
    Member 6880 Mike's Avatar
    Join Date
    Jun 2006
    The Bluegrass State
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    1968 convertible; 1980 L-82


    The 77 assembly instruction manual (AIM) shows the factory installation of the four speed and will list the parts you will need. Clutch brackets came with the 4 speed frame and will need to be added to your car. If memory serves, the AT floor panel is a little different than the 4 speed floor pan.

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