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Does Anyone Know???

Discussion in 'Ford Trucks' started by Sharpshooter77, Jan 11, 2007.

  1. Sharpshooter77

    Sharpshooter77 Senior Member
    Messages: 162

    Hello everyone, I wanted to know if anyone knew what kind of gas mileage a 1985, F-250 4x4, with a 351 windsor with a four barrel 600 or 650 CFM holley would get per mile. I wanted to know this because neither one of my two gas tanks has a working gas gauge. I am going to fix the gas gauge problem soon, but until then I need to know the MPG on my truck. Thanks
  2. Oshkosh

    Oshkosh PlowSite.com Addict
    Messages: 1,655

    Your best bet...

    I think as every truck is a little different, your best bet would be to top off the tank,write down your mileage drive it around for a day then top it off again and do the math...Otherwise I would guess about 10mpg...
  3. Sharpshooter77

    Sharpshooter77 Senior Member
    Messages: 162

    Oshkosh- I kinda though that I wouldn't get any better then 10 mpg. All well if I wanted a truck that was good on gas I would have bought a 4 cylinder import. I think I get about 9.5 mpg pulling a 25 foot boston whaler, because I did 180 miles and had a full tank of gas of 19 gallons, 180 divided 19 = 9.5 mpg. Maybe I should have got a diesel :cool: :drinkup: :D
  4. Oshkosh

    Oshkosh PlowSite.com Addict
    Messages: 1,655

    It is what it is....

    My Gm diesel 2wd 1 ton got 15 and my gas 4x4 got 6-8, its all about what you can afford at the time...I've been there....
    I was guessing on your Ford based on my 91 F150sc 4x4 with a 351,headers,throttle body spacer etc I would be lucky to get 13-14..Our F250sc 2wd with a 460 got 8mpg towing or not....
    If I was going for mileage I would find an early Dodge with the cummins...I've talked with guys getting 20mpg towing a 20' power boat up from Fla at 70mph....Nothing wrong with that!!!
  5. hydro_37

    hydro_37 PlowSite Veteran
    from iowa
    Messages: 3,790

    I have a 1999 F-250 4X4 with the V-10 motor and average 8 when I am plowing. Not good mpg's but I have the power to push anything as long as I get traction. Tim
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    We have an 86 F350 with a 460 and a holley carb. Get's 6 MPG around town and with a 19 gal tank you don't get too far!
  7. sawbones25

    sawbones25 Member
    Messages: 74

    I'm with him.

    My 460 with a 650 Holley 4-barrel can run through some gasoline.

    I did drive it to North Carolina last summer. The trip was about 250 miles each way. With no overdrive I was only doing about 60 on the highway, which meant getting the finger a lot. But I got down there and about 1/3 of the way back on one fill up (two tanks).
    I don't even bother keeping track when driving around town or plowing with it.

    My sending unit on the back tank doesn't work either. When I fill up both, I start driving on the back tank. When the truck starts to sputter I switch tanks... When the front empties, I fill up again and start all over.
  8. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Since both do not work that's a clue that it's not the sending units. Check your tank selector switch they go bad all the time. Bet it's a wiring problem somewhere.
    My EFI 351 gets about 10 - 11 MPG. My Dad's last carbed 351 was about the same.
  9. QuadPlower

    QuadPlower PlowSite.com Addict
    Messages: 1,056

    90 F-450 with a EFI 460 = 7.6 mph.
    93 GMC2500 with 6.5 turbo diesel = 14.5 w/AC off and cold winter air coming in.

    88 F-250 w 460 EFI = Don't know. Drive backward too much to get an accurate milage reading.

    Oshkosh had the best idea. top off, drive, top off and divide.
  10. Mebes

    Mebes Senior Member
    Messages: 451

    Seems to me I got around 8 around town and 4-6 plowing on my old 87 F350 351 EFI.
    I would not expect you to break 10 with your setup.