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stock rear gears???

Discussion in '1983-2005 S-Series models' started by mudslinger6, Dec 26, 2004.

  1. mudslinger6

    mudslinger6 1/2 ton status

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    what would an 89 s-10 blazer with a 4.3 have in it for gears???
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    most likely 3.08

    you can check the RPO code list in the center console. look for a G** code, i think 3.08s are GU4
     
  3. HarryH3

    HarryH3 1 ton status Author

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    I've got a '91 S-Jimmy that we purchased new. As I recall, the only ratio options that year were 3.08's (stock) or 3.42's (came with HD trailer package). Some earlier years came with 4.11's, but I think that might have only been with a 4-banger under the hood.
     
  4. mosesburb

    mosesburb For Rent Premium Member GMOTM Winner

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    I don't know how relative it is, but both of my S10s with 4.3L manual trans 4x4s had 3.42 gears from the factory.
     
  5. mudslinger6

    mudslinger6 1/2 ton status

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    thanks

    thanks for the information ill look around on the truck and some info that i got with it to help me out and ill write back and maybe u can further help me
     
  6. R72K5

    R72K5 Banned

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    yeah look for GT5, etc, then put it into google search along with RPO

    in my experience 3.42 is extremely common in these and the mid late 80s F bodies too,

    4.11 was in the luv's i know, but the s-10s too ? havent run into on yet

    good luck
     

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