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MM6 Ratios

This is a discussion on MM6 Ratios within the Firebird / WS6 forums, part of the Vehicle Specific category; Are the Tremec gear ratios the same for different cars, ie transam and gto with 6-speeds....

  1. #1
    Join Date
    Jun 2012

    MM6 Ratios

    Are the Tremec gear ratios the same for different cars, ie transam and gto with 6-speeds.

  2. #2
    Moderator 98TransAmWs-6's Avatar
    Join Date
    Apr 2010
    Fairfax, VA

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    98 TA WS6/ 01 C5 Corvette

    I don't know specifically for trans am vs gto but I know non-gm brand tremec 6 speeds have different ratios. I want to say the gto and TA ratios are close but I am not 100% positive and I could be totally wrong.
    Last edited by 98TransAmWs-6; 06-18-2013 at 09:10 AM.
    1998 Trans Am WS6 - Phantom
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  3. #3
    Join Date
    Jun 2012


    I found the info on the net, the ratios are the same between ws6 and gto and the rear end ratios are the same. I have both cars, same diameter tires yet they drive differently. I can get the gto into 6th around town at 2000rpm. The transam I have to be on the freeway before I can shift into 6th. Also the factory specs are different with the same driveline setup. gto=13.8 @ 116 and transam 13.0@108. Gto has a faster top speed but its slower in the et's. Why is this?

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