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Thread: Starting & Tuning up 540BBC with Holley DP 750's and B&M 871 Blower
          
   
   

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  1. #1
    68bbccamaro's Avatar
    68bbccamaro is offline CHR Member Visit my Photo Gallery
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    May 2015
    Location
    Austin
    Car Year, Make, Model: 68 Camaro
    Posts
    21

    It has a two speed power glide right now. I am looking to swap to a 700r4.

    Rear axle has 4.11 gears in it.

    Tire size as of now is 255/60R15.

  2. #2
    Henry Rifle's Avatar
    Henry Rifle is offline CHR Member Visit my Photo Gallery
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    Apr 2004
    Location
    Little Elm
    Car Year, Make, Model: 34 Ford Low Boy w/ZZ430 Clone
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    3,890

    Quote Originally Posted by 68bbccamaro View Post
    It has a two speed power glide right now. I am looking to swap to a 700r4. Rear axle has 4.11 gears in it. Tire size as of now is 255/60R15.
    With the 700R4's 3.06 first gear and a 4.11 differential gear, you're going to have real a stump puller with an overall drive ratio of 12.58 in low gear. That's equivalent to an old Muncie M21 close ratio with 5.71 gears. Should be interesting. Maybe even more interesting when you hit second gear under power.
    Last edited by Henry Rifle; 05-12-2015 at 12:48 PM.
    Jack

    Gone to Texas

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