Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

4:27 or 4:56

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by chevy4x4, May 2, 2000.

  1. chevy4x4

    chevy4x4 1/2 ton status

    Joined:
    Apr 27, 2000
    Posts:
    1,454
    Likes Received:
    0
    I have a 78 blazer wich i want to lift 7 inches.
    I would like to run 38s but am probably going to run 35s first. Should i get 4:27 gears or 4:56?
    I don t want my gas mileage to be "too" bad/
    THx
    Chevy4x4

    p.s. why does it say stranger beside my name?
     
  2. Corey-88K5

    Corey-88K5 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    720
    Likes Received:
    0
    Location:
    Home: Michigan, Stationed: Hill AFB (Home of Moab.
    If you are running 35's than 4.56:1's is the ratio you want. If 38's are in the future, than you may as well put in the larger gears now. I think its 5.11:1? Don't hold me to that though.

    As far as stranger, well its just the computers way of letting us know that you are "stranger" than the rest of us.

    Corey
    88K5

    [​IMG]<font color=red>Girls Like Guys In Bow Ties
    http://www.geocities.com/corey_perez
     
  3. shaggyk5

    shaggyk5 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,610
    Likes Received:
    0
    Location:
    SE pennsylvania
    good one corey.

    shaggyk5

    aint nuthin in the world like a heavy chevy!!
     
  4. chaka73

    chaka73 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    377
    Likes Received:
    0
    Location:
    Southern California
    I would go with the 5:11s might as well, why spend twice if 38s are in your future.

    keep blazin !!!
     
  5. ken

    ken 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,244
    Likes Received:
    0
    Location:
    Anaheim, CA
    4.27s are not available for GM axles (only Dana 44s). 5.11s are also not available...try 5.13s.

    ken
     
  6. BlueKnight

    BlueKnight 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    1,518
    Likes Received:
    0
    Location:
    Oregon
    I run 4.56's and seems to be fine for me a little high geared but nice when on the freeway in between trails. I almost went 4.88's they would be ideal....

    <font color=purple>79' K-5 396cid 600hp, TH350, NP203</font color=purple>
    http://79blueknight.homepage.com
     
  7. DangerB

    DangerB 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    420
    Likes Received:
    0
    Location:
    Frisco, TX.
    Blueknight, what size tires are you runnin? Can you go 70 comfortably and not rev too hard?

    DangerBrett[​IMG]
    <font color=blue>obviously a smartass </font color=blue>
     
  8. Grey Thunder

    Grey Thunder Registered Member

    Joined:
    Mar 2, 2000
    Posts:
    65
    Likes Received:
    0
    Location:
    Home: Ojai, Ca......School:Santa Cruz, Ca
    im running 38 tsl swampers and ive got 4:56's .. being pushed by a 383 stroker and i love they way that they work.. i would suggest the 4:56's...

    dj


    " If it ain't a chevy, don't raise it up"
     
  9. '73 K5

    '73 K5 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    1,763
    Likes Received:
    0
    Location:
    Kansas
    Here is what I say works:
    4.11 for 33's
    4.56 for 35's
    4.88 for 38's


    '73 K5
    Chevy good...Ford bad
     
  10. Truckfan2

    Truckfan2 1/2 ton status

    Joined:
    Apr 10, 2000
    Posts:
    343
    Likes Received:
    0
    Location:
    Northern IL
    And not only does the tyre size matter with the gears, it's also which trans you have... you could go with a higher gear (4.11's or 4.56's) than 5.13's if you have a lower first gear like the 700r4's 3.06 first gear compared to the TH350's 2.52... and what kind of driving you're doing. Hoped that wasn't too confusing...

    NEVER been stuck... *yet*
     

Share This Page