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  1. #1
    JK Enthusiast
    Join Date
    Jun 2007
    Location
    Georgia from NJ. Jersey blows!
    Posts
    167

    Default HEMI conv. question...

    About to pull the trigger and just do it.

    My Unl. JK has 5.13's and 37's with the minivan 3.8 now. What gear ratio would be best if I went with the 5.7?! or the 6.1?!

    Could the HEMI conv. specialist's here tell me their thoughts on the 5.7's power?! How much differ than the V6? Drastically different the 5.7 to the 6.1?

    Just wanna make the right choice.
    Nate (N8!)

    07 Black Sahara Unl.
    5 in. suspension
    1 inch body M.O.R.E.
    TeraFlex/ Adj. Track bars (F/R)
    Teraflex lower control arms (F)
    Baja Claw 37/13.50
    17x9 Pro Comp matte black
    AFE CAI
    Magnaflow Exhaust
    5.13 Superior's
    GLOCK security system

  2. #2
    JK Enthusiast
    Join Date
    Oct 2008
    Location
    MB
    Posts
    137

    Default

    Quote Originally Posted by N8Kern View Post
    About to pull the trigger and just do it.

    My Unl. JK has 5.13's and 37's with the minivan 3.8 now. What gear ratio would be best if I went with the 5.7?! or the 6.1?!

    Could the HEMI conv. specialist's here tell me their thoughts on the 5.7's power?! How much differ than the V6? Drastically different the 5.7 to the 6.1?

    Just wanna make the right choice.

    What tranny will you be using ? In my old YJ. I went from the 4 banger with 5.38's. I put in 4.56 with i swapped in an AMC 360 W/3spd auto. I was also running 39.5" IROKS

  3. #3
    JK Newbie 2Stroke's Avatar
    Join Date
    Jul 2007
    Location
    Edmond, OK
    Posts
    34

    Default Hemi Swap

    I had the 6.1 and 5 speed auto swapped in a few months ago. I went with 5.13's because I am going to go to 40's when I wear out my current 37's. If I were to stay with 37's I probably would have gone with 4.88's. I currently cruise at 70 mph at an RPM of 2300 with the 37's.

    There is absolutely no comparison between the V-6 and either of the V-8's, power will not be a problem either way you go.
    '08 2DR Rubi
    6.1 Hemi
    Pro Rock 60's
    40" MTR's
    Evo Coilovers
    RE 4.5" LA

  4. #4
    JK Enthusiast 2kTiM5's Avatar
    Join Date
    Mar 2008
    Location
    Enid, OK
    Posts
    111

    Default

    Quote Originally Posted by 2Stroke View Post
    I had the 6.1 and 5 speed auto swapped in a few months ago. I went with 5.13's because I am going to go to 40's when I wear out my current 37's. If I were to stay with 37's I probably would have gone with 4.88's. I currently cruise at 70 mph at an RPM of 2300 with the 37's.

    There is absolutely no comparison between the V-6 and either of the V-8's, power will not be a problem either way you go.
    who did your hemi conversion?
    SOLD2008 Unlimited Rubicon/Jeep Green /MyGig/DT/tow
    • 7028 ProComp Wheels
    • BFG KM2 35/12.5/17
    • AEV Front bumper with skidplate
    • 4-Lightforce 170"s(0rdered)
    • TF 2.5" Spring lift w/shocks
    • Shrockworks slider/step
    • Hypertech progrmmer
    • mastercraft handles
    • lockpick with BT mic, rear camera


    SOLD2006 Volvo V70R
    2008 REDROCK GCSRT8
    2004 Harley-Davidson FLSTCI "newstalgia"

  5. #5
    -
    Join Date
    Nov 2006
    Location
    .
    Posts
    15,196

    Default

    Quote Originally Posted by 2kTiM5 View Post
    who did your hemi conversion?
    Not sure who did 2Stroke's conversion, but look here. SRT-8 6.1l JK Hemi Conversions from SLC

  6. #6
    JK Junkie Littlejon's Avatar
    Join Date
    May 2007
    Location
    Des Moines, Iowa
    Posts
    2,216

    Default

    With a 37" tire the 4.88 is the recomended gear with any Hemi conversion.
    Jon

    2008 Black Unlimited Rubicon
    www.springtailsolutions.com
    www.northridge4x4.com

  7. #7
    JK Enthusiast 2kTiM5's Avatar
    Join Date
    Mar 2008
    Location
    Enid, OK
    Posts
    111

    Default

    Quote Originally Posted by Robar View Post
    Not sure who did 2Stroke's conversion, but look here. SRT-8 6.1l JK Hemi Conversions from SLC
    yeah, i know about them i bought my AEV front bumper from them. i was just looking for some on that may be closer to OK with experience. When i am ready SLC will probabally be the one.
    SOLD2008 Unlimited Rubicon/Jeep Green /MyGig/DT/tow
    • 7028 ProComp Wheels
    • BFG KM2 35/12.5/17
    • AEV Front bumper with skidplate
    • 4-Lightforce 170"s(0rdered)
    • TF 2.5" Spring lift w/shocks
    • Shrockworks slider/step
    • Hypertech progrmmer
    • mastercraft handles
    • lockpick with BT mic, rear camera


    SOLD2006 Volvo V70R
    2008 REDROCK GCSRT8
    2004 Harley-Davidson FLSTCI "newstalgia"

  8. #8
    JK Newbie 2Stroke's Avatar
    Join Date
    Jul 2007
    Location
    Edmond, OK
    Posts
    34

    Default Hemi Swap

    Guys,

    Sorry for the late response but SLC did my swap.

    JD
    '08 2DR Rubi
    6.1 Hemi
    Pro Rock 60's
    40" MTR's
    Evo Coilovers
    RE 4.5" LA

  9. #9
    JK Junkie kntr's Avatar
    Join Date
    Oct 2007
    Location
    Montana
    Posts
    2,359

    Default

    Quote Originally Posted by 2Stroke View Post
    I had the 6.1 and 5 speed auto swapped in a few months ago. I went with 5.13's because I am going to go to 40's when I wear out my current 37's. If I were to stay with 37's I probably would have gone with 4.88's. I currently cruise at 70 mph at an RPM of 2300 with the 37's.

    There is absolutely no comparison between the V-6 and either of the V-8's, power will not be a problem either way you go.
    That sounds about perfect to me.... 70 at 2300rpm
    http://northridge4x4.com/

    2010 Rubicon JKU
    5:38 gears and AEV front driveline
    4.5" AEV premium with AEV High Steer Kit
    AEV rear tire swing on stock bumper
    37" Goodyear MTRs on 17x9 ProComp wheels
    AEV floor mats/Jeep and Paracord grab handles
    Lightforce 170s and Thule T2 bike rack

  10. #10
    Sponsoring Vendor Screamin Lizard Customs's Avatar
    Join Date
    May 2007
    Location
    Bedford, Texas
    Posts
    1,645

    Default

    Thanks JD
    The Texas JK Specialists
    Full Service Customs Shop From Oil Changes To Hemi Conversions
    Dealer: Off Road Evolution, AEV, Full Traction, Warn, Teraflex, Rock Hard 4x4, Dyantrac, Currie, And A Whole Lot More
    - - -



    1-877-725-9837

    AEV Stocking Dealer

  11. Default JK-Forum


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