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axle ratio?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by coopertwpk, Apr 11, 2001.

  1. coopertwpk

    coopertwpk 1/2 ton status

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    my 14 bolt gears have these #s 1GM 3977 334 10 41 11 14
    anybody know what ratios they have?

    88k5 silverado w4"lift soon to have <font color=orange>d44 and corp14ff</font color=orange> with 4.56s
     
  2. Goose

    Goose 1/2 ton status

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    3.73:1 the part that says "41 11" is your ring and pinion tooth count. 41/11=3.7272....

    [​IMG]
     
  3. thatK30guy

    thatK30guy 1 ton status Premium Member

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    The stampings 3977 will be the date. March 9th, 1977. I think the 334 and 10 are the assembly line and where the rear was built. The 1GM is (I also think) the code for which axle this is. Not sure about the 14. The 41 and 11 are the number of teeth on the ring gear and pinion.
     

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