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Thread: Miles Per Tank - LS vs. 3.6L

  1. #1
    Been Around the Block bhaner's Avatar
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    Miles Per Tank - LS vs. 3.6L

    Just finishing up my first tank of fuel since my build made it on the road.

    So far the light isn't on and I have about 215 miles on it. I figure that isn't bad for what it is.

    6600#, 40's, 5.38 gears, 60/80 combo.

    My plans include an upgrade to a L86/8L90.

    I hear that most get a little better mileage after the swap. Just looking for some real world info.

    The MPG really doesn't concern me as much as the miles per tank. Trying to figure out how much fuel I would need to pack for a 200 mile offroad trip.

    How many miles can you go offroad?
    Byron Haner - Wickersham, Wa
    -Currently Building-
    2016 JKUR HR
    Evo Offroad DTD w/Evo Lever
    Dynatrac Elite ProRock XD60/80
    40" Procomp MT, 17" B.A.D. Wheels

    My Build Thread

  2. #2
    Advertiser Exodus Jeeps's Avatar
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    Ignore what your read on the internet about LS swapped Jeeps and mileage.

    Pack as much fuel as you can for on your Jeep for a 200 mile off-road trip.

    Wait 2 more years for a V8 if you’re wanting the GenV.


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  3. #3
    Been Around the Block bhaner's Avatar
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    Quote Originally Posted by Exodus Jeeps View Post

    Wait 2 more years for a V8 if you’re wanting the GenV.


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    Why is that?
    Byron Haner - Wickersham, Wa
    -Currently Building-
    2016 JKUR HR
    Evo Offroad DTD w/Evo Lever
    Dynatrac Elite ProRock XD60/80
    40" Procomp MT, 17" B.A.D. Wheels

    My Build Thread

  4. #4
    Resident Smartass OverlanderJK's Avatar
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    Quote Originally Posted by bhaner View Post
    Why is that?
    8 speed.


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  5. #5
    Been Around the Block bhaner's Avatar
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    Quote Originally Posted by OverlanderJK View Post
    8 speed.


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    My plan was the L86 and 8L90 8 speed.

    Just wondering why I should wait.
    Byron Haner - Wickersham, Wa
    -Currently Building-
    2016 JKUR HR
    Evo Offroad DTD w/Evo Lever
    Dynatrac Elite ProRock XD60/80
    40" Procomp MT, 17" B.A.D. Wheels

    My Build Thread

  6. #6
    Old Timer dillard09's Avatar
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    For me with the LS I get about 200-225 on a tank depending on how I drive. But I know for sure the SPG went way up! 😁😁😁
    '08 JKUR 6.0LS, 6L80
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  7. #7
    Advertiser Exodus Jeeps's Avatar
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    Quote Originally Posted by bhaner View Post
    My plan was the L86 and 8L90 8 speed.

    Just wondering why I should wait.
    The GenV swaps are relatively new when compared to the GenIV. Unless you live in Vegas and can run down the street to fix issues when they come up, I wouldn’t recommend doing it.


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  8. #8
    Been Around the Block bhaner's Avatar
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    Quote Originally Posted by Exodus Jeeps View Post
    The GenV swaps are relatively new when compared to the GenIV. Unless you live in Vegas and can run down the street to fix issues when they come up, I wouldn’t recommend doing it.


    Sent from my iPhone using WAYALIFE mobile app
    Interesting... I had a few conversations with a shop in Vegas and that was part of the reason I was really interested in the GenV. LT1 and L86 with the 8L90 were at the top of my list.

    I have helped with a few other swaps (GenIV) and ended up with a laptop and the same software they use. Figured that would help with remote trouble shooting.
    Last edited by bhaner; 01-08-2019 at 10:02 PM.
    Byron Haner - Wickersham, Wa
    -Currently Building-
    2016 JKUR HR
    Evo Offroad DTD w/Evo Lever
    Dynatrac Elite ProRock XD60/80
    40" Procomp MT, 17" B.A.D. Wheels

    My Build Thread

  9. #9
    Been Around the Block bhaner's Avatar
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    Quote Originally Posted by dillard09 View Post
    For me with the LS I get about 200-225 on a tank depending on how I drive. But I know for sure the SPG went way up! 😁😁😁
    My SPG is a little low right now... Gotta pump those numbers up!
    Byron Haner - Wickersham, Wa
    -Currently Building-
    2016 JKUR HR
    Evo Offroad DTD w/Evo Lever
    Dynatrac Elite ProRock XD60/80
    40" Procomp MT, 17" B.A.D. Wheels

    My Build Thread

  10. #10
    Advertiser Exodus Jeeps's Avatar
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    Good luck with your build


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