Results 1 to 6 of 6

MPG daily driver swap in 59 Mercury

This is a discussion on MPG daily driver swap in 59 Mercury within the General Help forums, part of the LSx Technical Help Section category; Got a 59 Mercury Monterey weighs 4000 lbs and has a 291 diff. Wanting a high MPG LS configuration. I ...

  1. #1
    Junior Member
    Join Date
    Sep 2018
    Location
    Haubstadt Indiana
    Posts
    3

    green for now
    1959 Mercury Monterey

    Question MPG daily driver swap in 59 Mercury

    Got a 59 Mercury Monterey weighs 4000 lbs and has a 291 diff. Wanting a high MPG LS configuration.
    I was thinking of 5.3 with a 460E but also wondering if a 6.0 with 460e would do better considering the weight and high
    291 diff. Also I could use help with choice of exhaust and other things i can eliminate or add to get premium gas mileage.
    The old girl will look good, ease down the highway, and hopefully get 20? maybe more? Thanks for your time i dont know much and need help.

  2. #2
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Florida Man Status Acheivement
    Posts
    11,722

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    what size rear?

    5.3's are stout engines but the 6.0 has better options over the 5.3. MPG is based on a tons of factors besides GR.


    Engine specs, Tire size, tune, transmission, rear end as well as weight of the car. 20 mpg is not far off or hard to achieve.

    F bodies are around 3600 lbs while most Silverado's average 6300-7500lbs depending on model and year. Most 5.3's in those trucks avg 16-18 mpg. While most f-bodies avg 18-24 mpg some better depending on how the driver drove.





    Please, please, please.......make a thread on your build. It would be an awesome build to follow here.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403ci , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, Full UMI Performance Suspension, Belstein Shocks, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/Wavetrac Diff 3.73 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert - Stock

    Horsepower never lies, but is often lied about!

  3. #3
    Super Moderator pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    22,146

    Black & Blue
    '02 WS.6 / '07 Suburban

    4,000 lbs is nothing for a 5.3 -- they are a stout engine. Problem with the 4L60E is the jump from 2nd to 3rd -- just too widely spaced. What size wheels/tires will you be running? If you are going "donk" size then the 2.91 differential is going to suck at everything but getting good mileage.

  4. #4
    Junior Member
    Join Date
    Sep 2018
    Location
    Haubstadt Indiana
    Posts
    3

    green for now
    1959 Mercury Monterey

    No donkin going on. Stock is 14" wheel but if I switch to 16" with low profile I can keep the same diameter. So maybe a 6 speed would tighten things up? I dont want a total dog just a balanced ride with MPG as the realistic goal. Also wondering about a 5.7 combo. Thanks for your time and input. This thing is gonna happen, I am trying plan the work then work the plan....oh and i dont know much except that i have had 2 death threats so far from Fordies.

  5. #5
    Junior Member
    Join Date
    Sep 2018
    Location
    Haubstadt Indiana
    Posts
    3

    green for now
    1959 Mercury Monterey

    Thanks man,
    its got a 9" rear at 2.91. I am keeping the same overall wheel diameter just changing the rim and tires a little. I really appreciate your encouragement on doing this and will for sure keep a thread record going. this is not a popular car by any means but the first time i saw it i loved it. Its just got a coolness that deserves to be rolling. Im getting old and it fits me good. Worthless to most but still valid and not done yet.

  6. #6
    Super Moderator pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    22,146

    Black & Blue
    '02 WS.6 / '07 Suburban

    I love oddball cars -- would take a Monterey over a Mustang or Camaro any day of the week. You can run some calculations with your rear end ratio and tire diameter to determine cruising rpm and such. You would also have to factor in the OD on the 4L60E. With smaller diameter tires (ie. non-donks) the 2.91 rear may be just fine, especially with your goal of having something that gets decent mileage. Between the 5.3 and the 5.7 you are honestly only talking around a 40 hp difference in stock configuration. Both engines respond well to headers and some simple bolt on mods to up the output. Jump up to a 6.0 and now there is a serious difference, especially in torque which is what it take to move old iron. Remember to factor in your fuel system modifications -- unless you are switching over to a carb, you'll need 58 psi at the rail with all of these engines.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. For Sale: 1994 Mercury Grand Marquis GS FOR SALE, GREAT DAILY DRIVER!!
    By Travisnd in forum Vehicles For Sale / Trade
    Replies: 1
    Last Post: 12-11-2015, 05:03 PM
  2. The Beginning and the End of Mercury - Mercury, 1939-2010
    By Ed Blown Vert in forum Almost Anything Goes
    Replies: 0
    Last Post: 10-25-2010, 05:00 PM
  3. 1 owner daily driver 1964 mercury comet
    By 1MileCrash in forum Almost Anything Goes
    Replies: 26
    Last Post: 07-16-2010, 10:58 PM
  4. 96 mercury cougar great daily driver only 36,552 m
    By naperws6 in forum Mid-West Members
    Replies: 1
    Last Post: 03-29-2009, 12:21 PM
  5. For Sale: 1991 Mercury Sable GS -- Excellent Daily Driver!!!
    By '99 SLP#24 in forum Vehicles For Sale / Trade
    Replies: 10
    Last Post: 09-06-2005, 06:23 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •