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what kind of mileage do you get?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by noisepollution, Oct 9, 2001.

  1. noisepollution

    noisepollution Newbie

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    hi all i'm in the market for a 73 k-5 blazer and i was wondering what kind of mileage everyone in heres getting. lemme know cause i'm curious.
    thanks,
    Keith
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    Location:
    Phoenix, AZ
    My Jimmy gets 14 mpg everywhere, in town, highway, or towing. Thats with 35s 3.08 gears and overdrive and carburated. I get 10 mpg offroading though. For the Suburban I get 15 mpg everywhere. Thats with 35s 3.73s (I believe), overdrive and TBI. My dads 89 Suburban gets 19 mpg anywhere, thats with 31s, 3.08s TBI and overdrive. Now as for the Firebird I get 5 mpg in the city, and 7.75 on the freeway at 75 mph. Thats with a pontiac 350, th400, 3.70s and 24.5" tall tires. Go figure that a car with half the wieght of the brb gets 3 times worse gas milage:)

    86Jimmy 4"&35"MTRs,87 burb 4"&35"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Location:
    Cochrane, Alberta, Canada
    I recently posted about this a couple of times..........By slowing down around 10 MPH on average on the highway, I increased my mileage to almost 19MPG!!!!! Bombing around town and towing I only get about 12 or 13.

    That's with a 305 and a 700r4. I think my recently installed dual 2 1/4" exhaust helps a bit, as well as the fact that all the smog stuff has been removed from my truck. We don't have any smog laws up here[​IMG]!!!!!



    <font color=blue> WE WILL NEVER SURRENDER<font color=blue>
     
  4. tori89k5

    tori89k5 1/2 ton status

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    Location:
    Pismo Beach, California
    This has been covered at least a thousand times,..... but i gotta brag...... i just got a little over 16 MPG on the Highway at about 65-70 MPH. But then ive got an overdrive tranny too....
    Thats with 3.73 gears and 33" tires
    Maybe you wanna buy my extra 700R4 &lt;img src="http://coloradok5.com/forums/images/icons/smile.gif"&gt;

    1990 K5 4" lift, 33's, Raptor Tranny and Velvet Rides....
     
  5. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    Location:
    Baton Rouge, Louisiana
    84 carb'ed 350 standard tranny 31's and 3.08's and i get about 12.5city and close to 17 highway
    on the other hand my 2wd c-10's get:
    85 350 th350 3.73's P235's(28.9's) gets 10 city 12 highway
    82 350 th350 4.11's P235's gets about 12 city and 10 highway

    What? You think the hole is too deep? Lemme see...
    1985 GMC C-10 Shortbed
    1984 Chevy K-5 Blazer
     
  6. newyorkin

    newyorkin 1 ton status

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    Location:
    Los Estados Unitos
    I do real good on the highway, probably way up there around 17-18 mpg most recently, and sometimes as low as 10 mpg around town. I figured it depends a lot on pedal usage...

    Mine's an '88 350, TBI, 33's, overdrive, still wondering about the gears... My speedometer's a little slow, too, so I add on a mile or two when estimating...

    Certainly not a truck to drive for it's ecomony!

    Ratch
    <a target="_blank" href=http://k5.8m.com>k5.8m.com</a>
    Welcome to America.
     
  7. jeffer

    jeffer 1/2 ton status

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    Location:
    Loveland, Colorado
    My '72 K5 w/ original 350, SM465, 3.73 gears and stock height snow tires gets about 8mpg city, almost 10mpg highway (never does over 65mph). Time for some bigger tires and an engine rebuild maybe? Needless to say it isn't my daily driver.
     
  8. LittleJimmy

    LittleJimmy 1/2 ton status

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    Channahon IL
    Dude you should try doing a search on your topic first. Sometimes these things have allready been talked about. I know you are new but you should do a search first then post a topic if you did not get enough info.
     
  9. Rebel88

    Rebel88 1/2 ton status

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    Location:
    Richmond, VA
    with 3.73s and a 700r4 with 36s(just for a little while til i get my new wheels for the 38s) i get around 11 or 12 city and about 15 to 17 highway...

    Later

    Have you driven OVER a Ford lately?
     
  10. Executioner

    Executioner 1/2 ton status

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    Location:
    Temp. Ft. Walton Beach Fl. home=Tucson, Az.
    It all depends on how to measure a mile, if you use the odometer it needs to be accurate. Most vehicles that
    have stockish gears with large tires read less miles than actullay traveled so the MPG will be lower than it
    really is. Now change the gears(ring+pinion), and the odometer can easily be +/- 30% from being accurate.
    Good luck
     
  11. Cmoe

    Cmoe 1/2 ton status

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    Location:
    Mesa,AZ
    9 mpg freeway streets and/or off road.......towing or not.....cann't wait to get my new trany and hopefully get a little better....

    C'moe

    Kill Roy was here!
     
  12. TXsizeK5

    TXsizeK5 1/2 ton status

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    Location:
    College Station, TX
    I have stock gears with 35" tires... i thnk i get about 10mpg in the city and no idea on the highway. 4.56 should improve city mpg. Myabe move up to 36-39's depends if i want a 2-3" body lift i want or if i just hack the fenders a bit for 36's.

    6in 87' K5 w/ 35" BFG muds.
    305/Sm465/ NP208
    Kn filter--&gt; 20hp haha
    I got my 4.56!!!!
    Next.., 2in body and 37" SSR's!
     
  13. Alaskan85K5

    Alaskan85K5 Registered Member

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    Location:
    Anchorage, AK
    Wow judging by what everyone else here seems to be getting one of two this is happening.





    1) There must be something wrong with my 85 Blazer (305, TH350, 3.08gears, 31x10.50R15 tires) cause I get about 8 city and 10 highway.





    or





    2) Everyone else is getting much closer to what Im getting and don't know it because there speedo/odometer is way off because of the big tires/gear changes etc...





    I'm trying my hardest to get better mileage, a TH700r4 would help but I don't think it would change drastically. I recently had a full tune up, that didn't change anything. Next thing I'm going to try is a K&amp;N filter, then a powerraid throttle body, then dual pipes and highflow muffler, then I'm going for a new carb. Any other suggestions?







    Remove the NOSPAM from the e-mail address to send me an e-mail.
     
  14. pr1aw

    pr1aw 1/2 ton status

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    Location:
    San Diego CA
    91 Blazer, 3.73, 31's, 350, 4L60(700r4), speedo corrected. 13MPG uphill, down hill, with the wind, against the wind.
     
  15. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    Location:
    Chicago, IL
    6MPG w/3.73 and 35's... And now I'm installing the 4.10's and changing the cam for additional power... so I'm hoping for about 5MPG now!

    I am also pulling the puddle dumper(Holley 750CFM), and installing a QJET. With any luck, the QJET helps my situation some!

    <font color=red>GOT MUD???</font color=red>
    <a target="_blank" href=http://24.10.209.54/bigolk5.htm>http://24.10.209.54/bigolk5.htm</a>
    454/TH400/NP205 - 14BFF/D60/w/ 4.10s
     
  16. white_knight

    white_knight 1/2 ton status

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    Calgary, Alberta,Canada
    Okay, these kind of posts suck for me.
    On the c-12 for mud boggin 2.5 gallons to the mile
    wheeling-a full day of wheeling - i need to bring a gerry can cause I won't make it the whole day.


    <a target="_blank" href=http://www.whiteknight.scriptmania.com/>http://www.whiteknight.scriptma
    nia.com
    </a>
     
  17. coloradoblazers

    coloradoblazers 1/2 ton status Premium Member

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    Location:
    WY
    10 mpg high way
    (live in the mountains, no city mpg)
    5mpg wheelin
    305, 36 tires with sm 465(I think) and 3.73's.
    Liberal with the pedal, often find myself racing anyone who trys to pass me(LOL)

    K5- because size DOES matter!
    <font color=blue> <a target="_blank" href=http://www.coloradok5.com/gallery/Bucks-Truck>
    Fear This </a>
    </font color=blue>
     

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