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Mileage before and after lift?

Discussion in 'The Garage' started by 89GMCSuburban, Dec 16, 2002.

  1. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    I got 12 on a good day before, but for some reason I get about 14 with the lift on (I'm still on 31's for the moment, till the 36's get here) What do you guys get so I can get an idea what I'll get?
     
  2. heavy4x4

    heavy4x4 1/2 ton status

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    Delafield, Wisconsin
    Before: 12-13
    After: 10 on a good tank (time for a tune-up /forums/images/graemlins/smirk.gif)
     
  3. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    You have to adjust the speedo for the tire size change.
    I get right at 9mpg on 35's with 4.10 gears. No Overdrive so engine is spinning about 2800-3k on the hwy.
     
  4. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    Heavy, what's your gear ratio??
     
  5. wayne

    wayne 3/4 ton status

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    I never actually checked milage but I'll say this. I go back and forth over to a friends house alot. When I was all stock (700r4/3;42's and 31" tires) it would take a 1/4 tank of gas. After the lift and axle swap (700r4/4:56's and 35's) it took less gas for the same trip. I don't know or care why but it is kinda interesting. The big thing I noticed is that the truck didn't seem to work as hard doing in town driving.
     
  6. heavy4x4

    heavy4x4 1/2 ton status

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  7. supersize75

    supersize75 1/2 ton status

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    I never even used a half tank befor I wrecked my stock 75 blazer.... but now I have 38.5 super swampers + a mild 396bb and going to 3/4 ton or 1 ton I hope for at least 7-8 mpg I'm also heavy on the pedal too. /forums/images/graemlins/grin.gif
     
  8. k20

    k20 3/4 ton status

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    mileage? whats that? i got 8 b4 the lift, bout 7-8 now.........BWHAAAAAAAAAAAAAAAA too hard on the skinny pedal i guess......Gotta quit racing that guy at school....
     
  9. Cmoe

    Cmoe 1/2 ton status

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    Hell, what is gas milage? I got about 9mpg befor the lift and after, if I'm pullung a trailer or not.
     
  10. Blazinaire

    Blazinaire 1/2 ton status

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    before lift (tbi350/700/3.42/32''s) 11-12 mpg, after lift (with 4.56's and 35''s) around 18mpg!!! I even subtracted for the % that the speedo was off and that is the number I got, but that was all highway miles. I don't understand it, but I'm not gonna argue!!!
     
  11. desertrat67

    desertrat67 Hawk Driver

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    7-8.5 with lift and stock tires(how i got it) and 7-8.5 with 38's added. no other changes.
     

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