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does my car have stock gearing?

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  • does my car have stock gearing?

    I'm trying to figure out why this thing feels so fast. it's a 94 formula M6. only visible mod is exhaust. car hauls ass and rips em in 1st, 2nd and part of 3rd.

    my cruising rpms at 70 in 6th are 1800ish. rear wheel diameter is 25.7" is that stock?

  • #2
    lift the car and rotate the driveshaft, will tell you what gears are back there
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    • #3
      70mph = about 1600
      the stock tachs are not very accurate.
      3.73 = 1700
      4.10 is about 1900
      http://www.f-body.org/gears/

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      • #4
        yea i already found out you cant use the stock tach to determine that... its not correct at all. put a mark on the tires and a mark on the driveshaft and count the rotations.
        -Joel
        1995 Z28 M6 - AI226/234 - autocross ricer
        1984 Scottsdale K10 - 305/4bbl/4spd


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        • #5
          cool calc there larry

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