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Axle ratio question

Discussion in 'Differential & Driveline' started by 1985c20, Aug 10, 2019.

  1. 1985c20

    1985c20 Full Access Member

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    Location:
    Torrington, CT
    First Name:
    Chuck
    Truck Year:
    1985
    Truck Model:
    C20
    Engine Size:
    350
    hello, can someone decipher the numbers I found stamped on my ring gear and tell me the axle ratio? I know I can jack it up and count the turns but where it’s parked right now I can’t or it will roll away. The numbers I found were
    97*334 10 41 9-76
    The * is a number I can’t make out.
    Thanks in advance!
     
  2. 78C10BigTen

    78C10BigTen Full Access Member

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    C10 BIG TEN
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    350
    Some one will correct me if im wrong but the 10 41 turns out to be a 4:10 gear
     
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  3. Craig 85

    Craig 85 Full Access Member

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    454/TH-400/NP205
    10-41 is 4.10 gears. If you still have the RPO tag, GT5 is the code for 4.10. You can see here on mine is GT4 for 3.73's.

    IMG_1431 (2) redacted.jpg
     
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  4. eskimomann209

    eskimomann209 Full Access Member

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    He’s right!
     
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  5. 1985c20

    1985c20 Full Access Member

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    Torrington, CT
    First Name:
    Chuck
    Truck Year:
    1985
    Truck Model:
    C20
    Engine Size:
    350
    Ok thanks. That’s what I thought but I just want to confirm. No RPO tag on this one, bought it as a frame with axles and added everything else from various parts trucks
     
  6. 73c20jim

    73c20jim Supporting Member Supporting Member

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    C20 2WD Custom Deluxe. C10 2WD Base Model
    Engine Size:
    350 CID 195/260 HP Goodwrench crate, 400 CID 2bbl
    By the way, 53 posts, 49 likes......impressive.
     
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