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Hey TEX!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 90K5, Jul 11, 2000.

  1. 90K5

    90K5 1/2 ton status

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    Location:
    Lubbock, TX
    How fast should I be going before I need to switch from D to OD? My truck has a 700R4, 33" ATs and 3.42 gears. I can tell I need it in D around town and sometimes going up a steep hill at like 45 mph it helps too. Thanks

    90K5
     
  2. bigdaddy89

    bigdaddy89 1/2 ton status

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    Location:
    Phx, Az
    Leave it in D until you get to about 45-50.
     
  3. laketex

    laketex 3/4 ton status

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    I've personally never seen TEX on this site, he usually lurks on ORC.

    As for the tranny question, doesn't it kickdown from Overdrive? I never run mine in drive unless I'm towing.

    [​IMG][​IMG]
    Durant, Ok
    '79 Blazer in progress
     
  4. Blazer1970

    Blazer1970 1/2 ton status

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    My Suburban has 33s with 3.42s, and I run it in D almost all the time. I only use OD on the highway above 65 mph, and it still downshifts on any kind of hill. I swear I get better mileage in drive than overdrive. With those tires, and that gear ratio, the .7 overdrive on the 700R4 is way too high of a gear.

    Tim

    1970 Blazer CST 4X4 350 SM465 NP205
    1987 Suburban 4X4 350
    1988 Chevy Pickup 4X4 350
     

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