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Gear ratio again!!!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by chaka73, May 3, 2000.

  1. chaka73

    chaka73 1/2 ton status

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    I'm sorry but I forgot how to figure out the gear ratio, my friend has a differential for sale, I opened the cover and counted the teeth, the ring has 43, and the pinion has 23 but I dont know how to figure it out any help thanks.

    LOVE MY GREEN GIANT!!!
     
  2. paul_cfh

    paul_cfh Registered Member

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    you must have counted wrong cause that would leave a ratio of 1.87 to 1 or or a 1.87 ratio

    <font color=blue>where the road ends the fun begins</font color=blue>
     
  3. '73 K5

    '73 K5 1/2 ton status

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    That is wrong. I think the lowest ratio I've ever heard of in a Chevy truck is 2.56.

    '73 K5
    Chevy good...Ford bad
     
  4. chaka73

    chaka73 1/2 ton status

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    Damn!!! dont tell me I counted it wrong I guess I have to recount the teeth, sorry guys.

    LOVE MY GREEN GIANT!!!
     
  5. paul_cfh

    paul_cfh Registered Member

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    once you recount the gears dived the ring gear by the pinion to get the ratio

    <font color=blue>where the road ends the fun begins</font color=blue>
     
  6. Emmettology 101

    Emmettology 101 3/4 ton status

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    If it is a GM or Richmond gear set, it will have the ratio or teeth count stamped right into the ring gear. On the GM unit it is b the serial/part number.

    Mike
    82 GMC Jimmy "Emmett"
    IN TOO DEEP Off-Road Club
     

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