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4.10's, 4.11's, or 4.56's??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 82K5_6.5L, Mar 11, 2003.

  1. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    4.10\'s, 4.11\'s, or 4.56\'s??

    wanting to go to 35's and undecided on which gears to upgrade..got the 700r4..since its got overdrive and all i've heard 4.56's??? some help?
     
  2. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    I run a modified SBC 4.56's, 700, 33-35 (depending on season) tire and I love the combo. With a diesel, I don't know as they have a lower RPM range. I would talk to somebody who has a similar DIESEL setup and see what they think.
     
  3. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    cool, arlight thanx
     
  4. Highlander

    Highlander 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    I have the same set up like Leadfoot and I like it as well. And He has a point you mite need to jump in the Diesel Board and see what they like. I doubt it would be different but who knows.


    Eric
     
  5. Snowbound

    Snowbound Registered Member

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    I've had 4.56 gears and 33's for almost 3 years with no problems
     
  6. Blue85

    Blue85 Troll Premium Member

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    4.10 and 4.11 are basically the same thing, so you don't need to distinguish between them. FYI, The 4.10's I have are both 41 ring teeth and 10 pinion teeth. For 4.11, I guess you have 37 and 9.
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    With 35s, go at least 4.56 with a 700. I'd go with 4.88s if you ever plan on using a larger tire.
     
  8. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    I ran 4.10 gears with 35" tires, 6.2 diesel, and 700r4 for a couple of years and it did okay though I would recommend going with the 4.56's. The 4.10's were originally installed when I had 33's, and now that I have 38's it's really doggy and I can't use overdrive much at all.
     
  9. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    Like I said, the 4.88s would be ideal for a larger-than-35" tire.
     
  10. zakk

    zakk 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    5.13's not sure what that would do to the disel.
     
  11. zcarczar

    zcarczar 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    Go with 4.88's. With OD there is only a 100 RPM difference at 70 between 4.56's and 4.88's on 35's.
     
  12. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    last i knew marv springer was running 3.73 with 35's. but he had a th350 and a mild 350SBC. kind of slow off the line i imagine, but i am sure he got good mileage. the 6.5 L does like a lower RPM. and personaly i would go 4.10 and put that low end TQ to the use.
    BUT, then you say 700R4... so 4.56 would be a nice option as well. it will make life easier for what I think is a POS tranny.
    just a personal opinion. dont mind me.
    grant
     
  13. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    hahaha P.O.S. tranny..y dont u like them?? besides that, u think 4.56's would work good?? cuz i wanna do it right u know??

    thanx /forums/images/graemlins/grin.gif
     
  14. zakk

    zakk 1/2 ton status

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    Re: 4.10\'s, 4.11\'s, or 4.56\'s??

    5.13's. I have a SBC350/TH350 combo and even with mild power i burned up my tranny in less than 1500 miles.

    with the OD, 5.13's and 35" tires you'll be turning 2200RPM's and it will be easier on the tranny.
     

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