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    Results 1 to 3 of 3
    1. #1
      Join Date
      Jul 2006
      Posts
      8

      6L80/6L90 rear end gearing

      What rear end gearing are you using for 1st gen Camaros with the 6 speed auto transmissions?

      It looks like the Corvette used 2.56 or 2.73, and the Camaro and Caddy use 3.23. Since the 1st gen Camaros are similar in weight to the Corvette, that seems like a reasonable direction, but it may put highway cruising in 6th gear too low for a built engine (~400-500 rwhp).

      What do you all think?

      Thanks.

    2. #2
      Join Date
      Jan 2013
      Location
      Cypress, California
      Posts
      381
      Country Flag: United States
      What tire size are you running? I am running a 26" tall rear tire with 3:23 gears, and this gives me around 1900 rpm at 70 mph. This is a 1965 Buick Skylark and a 6L80 transmission. First gear is still plenty low for any drag racing.

    3. #3
      Join Date
      Sep 2013
      Location
      Oakley, CA
      Posts
      107
      Country Flag: United States
      I have a 3.42 with 275/40/18s out back on a 70 camaro

      ------------------------------
      69 Camaro LS3/6L80e
      70 Camaro RS LS3/6l80e
      74 Nova 434 SBC




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