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Thread: ITB noob...

  1. #21
    Join Date
    Nov 2001
    Location
    Wheaton, IL
    Posts
    1,893

    Default

    Lots of people will tell you that you need a 4.25

    I ran a 3.94 with the stock height tires, and the 3.67 with the short 13s. The only outlier is Blackhawk - I prefer the 3.94 with short tires there, and the 3.67 with short tires everywhere else.

    My advice - don't invest in a 4.x final drive. Invest in races and seat time, and use stock 3.94 final drives with 14" wheels.
    Chris Schaafsma
    Golf 2 HProd

    AMT Racing Engines - DIYAutoTune.com

  2. #22
    Join Date
    Oct 2009
    Location
    Spooner, WI
    Posts
    87

    Default

    Thanks Chris...

    Yep, seat time is the ticket!

    I have a set of snowflakes and a set of Borbet 13's... ...I realize that I can change the final drive with different tire circumferences; that being said, does a 3.94 ring gear fit on the same diff as a 3.6?

    I'm sure a quick google search or STFA here would yield the answer, but this more entertaining showing everyone what complete and total boob I am...
    Last edited by Hoof Hearted; 12-12-2009 at 03:34 PM.

  3. #23
    Join Date
    Nov 2001
    Location
    Wheaton, IL
    Posts
    1,893

    Default

    Yes they fit the same diffs.
    Chris Schaafsma
    Golf 2 HProd

    AMT Racing Engines - DIYAutoTune.com

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