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82 K5 Blazer Diff?

Discussion in 'The Garage' started by nigsbro, Nov 18, 2004.

  1. nigsbro

    nigsbro Registered Member

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    Hi all could anyone help me i have a 82 k5 blazer with a Goodwrench SB 350 motor on a th350 box NP205 308 diffs and 33x12.50 tires im puling around 60 to 75 in first gear then off the clock in second i know i need to change my diffs but does anyone know what too? or what sort of speeds you are all getting so i can try to work out my gearing. plus does anyone know where i can get a 45 degree elbow to fit my oil sender back on my motor as without it the sender hits the manifold, over here in England im struggling to find one
    cheers, Bart /forums/images/graemlins/dunno.gif
     
  2. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I just shipped two gearsets to England about two weeks ago and the customer got them today. Hopefully you'll want to get your stuff from me as well. /forums/images/graemlins/thumb.gif

    I'd suggest 4.10s for 33s if you don't have overdrive, and 4.56 if you plan on 35s later.

    Any parts store should have the elbow...that's 1/8" NPT just for reference.
     
  3. 85mudblazin

    85mudblazin 1/2 ton status

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    are you saying that in first gear you go 60-75 MPH??? /forums/images/graemlins/dunno.gif
     
  4. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    are you saying that in first gear you go 60-75 MPH??? /forums/images/graemlins/dunno.gif

    [/ QUOTE ]

    First gear in a TH 350 is 2.52:1. With 33s, in 1st, at 5000 RPM he's going nearly 64 MPH. Sounds crazy but that's what airplane gears do. /forums/images/graemlins/smile.gif

    I can only go 11 MPH in my 1st gear. My rev limiter is at 5200 IIRC. /forums/images/graemlins/rotfl.gif
     
  5. nigsbro

    nigsbro Registered Member

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    Yes in first shes pulling 60 to 75 mph and off the clock in second my buddy paced me on motorcycle so i know these speeds are right. as to the elbow i cant find one anywhere over here been looking on American web sites for one think they are made by weatherhead.
     
  6. 85mudblazin

    85mudblazin 1/2 ton status

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    [ QUOTE ]
    [ QUOTE ]
    are you saying that in first gear you go 60-75 MPH??? /forums/images/graemlins/dunno.gif

    [/ QUOTE ]

    First gear in a TH 350 is 2.52:1. With 33s, in 1st, at 5000 RPM he's going nearly 64 MPH. Sounds crazy but that's what airplane gears do. /forums/images/graemlins/smile.gif

    I can only go 11 MPH in my 1st gear. My rev limiter is at 5200 IIRC. /forums/images/graemlins/rotfl.gif

    [/ QUOTE ]
    Thats crazy, 5,000 RPM is crazy also, my 700r4 doesnt pass 2,500 /forums/images/graemlins/thumb.gif
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    [ QUOTE ]
    [ QUOTE ]
    are you saying that in first gear you go 60-75 MPH??? /forums/images/graemlins/dunno.gif

    [/ QUOTE ]

    First gear in a TH 350 is 2.52:1. With 33s, in 1st, at 5000 RPM he's going nearly 64 MPH. Sounds crazy but that's what airplane gears do. /forums/images/graemlins/smile.gif

    I can only go 11 MPH in my 1st gear. My rev limiter is at 5200 IIRC. /forums/images/graemlins/rotfl.gif

    [/ QUOTE ]
    Thats crazy, 5,000 RPM is crazy also, my 700r4 doesnt pass 2,500 /forums/images/graemlins/thumb.gif

    [/ QUOTE ]

    Your TV cable is out of adjustment.
     
  8. RustBuket

    RustBuket 1/2 ton status

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    I must have similiar gears to you then because its the same thing for me....its brutal. Especially with a 305 .... /forums/images/graemlins/blush.gif
     
  9. 85mudblazin

    85mudblazin 1/2 ton status

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    really??? how do I adjust it correctly?
     
  10. k20

    k20 3/4 ton status

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    I know the oil fitting you are talking about, I dont know if I had to reuse it on my bbc, ill look in the garage tomorow, and either take a pic, see if anyone knows a part number or somethin, or i can send it to u, if you cant find one over there.
     
  11. nigsbro

    nigsbro Registered Member

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    [ QUOTE ]
    I know the oil fitting you are talking about, I dont know if I had to reuse it on my bbc, ill look in the garage tomorow, and either take a pic, see if anyone knows a part number or somethin, or i can send it to u, if you cant find one over there.

    [/ QUOTE ]
    cheers mate that would be a great help /forums/images/graemlins/woot.gif
     

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