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How to tell your gear ratios

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by blazingboy, Mar 21, 2002.

  1. blazingboy

    blazingboy 1/2 ton status

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    Isen't there some way you can tell what gear ratios you have by taking the cover off and counting the amount of teeth and dividing something.
     
  2. Hossbaby50

    Hossbaby50 3/4 ton status

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    Count the number of teeth on the ring gear, and divide it by the number of teeth on the pinion.
     
  3. Skigirl

    Skigirl 1/2 ton status

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    Should actually be a number in there, like 41:11. Divide the second number into the first one and that's your gear size. Do a search, there are other posts re: the math on this.
     
  4. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    The ring gear will have 41 teeth almost all the time. Just count the pinion and divide.

    Ex. 41 / 10 = 4.10
    41 / 11 = 3.73
    41 / 12 = 3.42
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Why count? It's stamped on the edge of the ring gear...

    Rene
     
  6. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    Agreed, but for the newbies its a learning experience IMO. Also some are stamped like 10 41 11 or 9 41 11. Ive seen some crazy stuff.

    I was just being thorough. /forums/images/icons/smile.gif

    John
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    True enough...you're right that 41 tooth ring gears seem the most common.

    Rene
     
  8. blazingboy

    blazingboy 1/2 ton status

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    Alright guy's thanks just started driving the k5 to school and everybody drools over it. Then a guy in a 2001 Chevy Silverado 2 wheel drive with a 14 inch lift and 39's tells me my 33's aren't big enough I said sorry my parent's aren't rich and then I really got him mad when I asked why he lifted a 2 wheel drive. Sorry guys just kinda mad about that.
     

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