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Gas Milege

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by redbeast, Jan 20, 2001.

  1. redbeast

    redbeast Registered Member

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    I was jus wondering. Whats is concired good gas milege for the 85. with a 305/700r/31x10.50
    engine is pretty much stock its has headers, dual xhaust, msd ign,rebuildt qjet and 3.73
    gears. my milage is around 8/10 city maybe 12/13 hiway, gas is pricey 1.39 per gallon and
    raising. iTs pretty dogie on the hiway to.. Real bummer to drive sometime. Love my k5 goes
    any where I need to go, jus hurts to fill up every 5 days, around 250/ 275 miles on a 31gal
    tank.......
     
  2. yeild2me

    yeild2me 1/2 ton status

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    doesnt sound like you are too far off. i have an 89 350/700r4/241 with 3.73 and 33's (just put on 35's tonight though!!) and 155,000 miles i get about 15 on the highway as long as i dont go over 65. if it is flat i will put it in o/d, if not i will leave it in third. with my top off though, thats a different story. unloaded and on the highway, it gets even better..thats why i want a soft top (besides the open air factor). i have a K&N, and a turbo muffler with 3" pipe from the cat. back. engine is stock other than that.

    AIRBORNE!!
     
  3. redbeast

    redbeast Registered Member

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    I forgot about that extra 350 lbs I call a hard top.. HMMM maybe ill go toples....
     
  4. gokartergo

    gokartergo 3/4 ton status Staff Member Moderator

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    About the same here. But gas is down to $1.67. And I am liking that price it was up over $1.86 for a long time.

    Become one with nature.............Then marinate it...
     
  5. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>If you want mileage, get a Geo Metro or a moped [​IMG] . My K5 has 350 .030" over w/ stuff, SM465/NP205, 14 bolt and dana 44 with 4.10s, and 36" TSL Radials. I get around 7-9 MPG so you're not doing to bad. I got a cheapo beater 4 cylinder car for commuting. It's more comfortable than my truck, doors actually stay shut, it gets 25 MPG and the tires will last more than 6 months. Now my truck is just for play so bad mileage is OK. I remember this came up a few months ago, 72blazer has a TPI 350 and an NV4500. He claimed 18 MPG around town and 25 on the highway! Most people agree, if you drive your truck daily and want mileage, stick to smaller tires, go easy on the [​IMG] pedal, and stay below 65. If you go faster than that, your just pushing wind. My freind has an 84 with a 305 q-jet, 700R4, 31s, and whatever gears came with it and he averages 14 on the highway. Back when my truck was almost stock, I added an Edlebrock perofrmer intake and 600 CFM carb. I got a couple more MPGs from the smaller carb I guess. It went right away when I built the new motor last year and added 36s and 4.10s this year. It's a price to pay for safety and versatility</font color=blue>

    [​IMG]
    <font color=blue>pavement queen with shinny paint job and car tires</font color=blue>
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    E-town baby!
    Believe it or not the hard top only weighs 188 lbs. I wieghed mine when I installed my soft top. The tailgate guts and glass come in at another 40 lbs.

    Rene

    [​IMG]
     
  7. HarryH3

    HarryH3 1 ton status Author

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    Hey tRustyK5, that must be the weight for one of those half-top K5's. [​IMG] The top on my '75 takes a small army to remove. [​IMG] [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  8. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Harry, that is the weight for the 'half top' 76-91 with the sliding side windows and maybe a 1/2 pound of dirt and mildew [​IMG]
    Do you have an overhead crane for the full top? [​IMG]

    Rene

    [​IMG]
     
  9. HarryH3

    HarryH3 1 ton status Author

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    To remove mine, I get inside and lift each end just enough to have a helper slide a 2x4 under the top. With a 2x4 at each end, bolted to the top (through the holes that mount the top to the body) there are now 4 "handles" for me and 3 friends to get that heavy mutha off of there.

    Once, many years ago, the wife and I wrestled it back on by ourselves 'cause a storm was coming and there was nowhere to get the truck out of the weather. We leaned it up against the back of the truck, then I got inside and lifted it with my back flat against the inside of the top, while my wife guided it into place. Not my idea of a fun time... [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  10. Hank75

    Hank75 Registered Member

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    I bolted a come along in my shed to a big post with the cable up to a pulley, down to four chains with big carpet covered L brackets. just back in and hook up crank the roof up 6 inches pull out and lock the come along for safety. . takes 5 minutes including bolt removal.

    <P ID="edit"><FONT SIZE=-1>Edited by Hank75 on 01/22/01 02:26 PM (server time).</FONT></P>
     
  11. HarryH3

    HarryH3 1 ton status Author

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    I'm afraid that the weight of the top on my '75 would bring down the garage! [​IMG] It's only got 2x4 trusses that span the depth of the garage and they're already supporting a concrete tile roof. I don't want to stress it too far! [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  12. Hank75

    Hank75 Registered Member

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    i always wonder about the groaning and creaking i hear from the supports of the pulley. oh well the hard top hasn't fallen yet. When it does time to put in a sweet full cage.
     
  13. Goose

    Goose 1/2 ton status

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    This has been covered in the past...but not for some time now. I can get my '73 full top off and on by myself. Here's how: Off-unbolt and get about in the middle and lift with back to break seals and move rearward about 4", get out and lift up on the rear so that just the front is touching and carefully slide back almost all the way, slowly let rear end to the ground as the top pivots on the rear of the bed rails, get in between topper and tailgate and use 2x4 or similar device to prop the topper up, move k5 forward, the remove 2x4 and let to ground, place on blocks. Install is reverse. Hard part is slowly backing to topper as it is propped up with 2x4. Most of my rear seals and stuff are shot so they don't get in the way. Tops with al the seals in good shape may have more difficulty or have seal damage. Don't know, but be careful.
    I had to do this once because I was leaving town for a week and had nobody to help. (Actually, I had one person, but he dropped it partway off the side the last time I had him help,,idiot)

    [​IMG]
     
  14. Pugsley

    Pugsley 1/2 ton status

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    Sounds about right, for a little bit of improvement, try an Edelbrock Performer intake. I put one on my 350, and my highway mileage jumped from 14-15 up to about 18-21. It also makes quite a bit of power off idle. Might be worth a try.
     
  15. BillyBob

    BillyBob 1/2 ton status

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    I get 12MPG town driving, and around 14 on the highway. I feel that's quite crappy for an 87 TBI 350/700R4/ 3.73/ 33" BFG ATS. However, I also need a tune up.

    [​IMG]

    <A target="_blank" HREF=http://billybob.coloradok5.com>http://billybob.coloradok5.com</A>
    It's all fun 'n games, till someone gets stuck.
     
  16. HarryH3

    HarryH3 1 ton status Author

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    BillyBob, my '87 got about the same the mileage as yours. A tune-up didn't help. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     

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