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Thread: J mod still a thing?

  1. #1
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    J mod still a thing?

    Are you guys still doing the j mod? What is the most up to date way you are having success?
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

  2. #2
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    Arrow

    Quote Originally Posted by 376shovel View Post
    Are you guys still doing the j mod? What is the most up to date way you are having success?

    Contact 88grandmarq here on this board or:


    https://www.facebook.com/North-Georg...Repair-3484146
    Current Garage:

    2005 Mustang GT Premium
    2019 Ranger Lariat Super Crewcab 4WD
    2015 Triumph Trophy SE



    “You've gotta dance like there's nobody watching,
    Love like you'll never be hurt,
    Sing like there's nobody listening,
    And live like it's heaven on earth.”
    William W. Purkey

  3. #3
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    Says page not found.

    I was thinking of buying this pre drilled kit:

    https://www.bcawebstore.com/index.ph...ct_detail&p=24
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

  4. #4
    Join Date
    Sep 2002
    Location
    Cape Cod, MA
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    13,676
    Eric (88grandmarq) recently moved...he's not in Georgia anymore, but I'm not sure where he went. He has been posting on crownvic.news (the replacement for CVN, which has gone belly-up).

    To answer the OP's question, yes the J-mod is still very much a thing and you would do well to get it done, either DIY or buy a completed valve-body from Eric.
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  5. #5
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    Quote Originally Posted by RF Overlord View Post
    Eric (88grandmarq) recently moved...he's not in Georgia anymore, but I'm not sure where he went. He has been posting on crownvic.news (the replacement for CVN, which has gone belly-up).

    To answer the OP's question, yes the J-mod is still very much a thing and you would do well to get it done, either DIY or buy a completed valve-body from Eric.



    His employer transferred him to Indiana as I recall - didn't realize he had already made the move. Read where he still responded to the North Georgia Transmissions facebook page and the United Panthers facebook page.

    88grandmarq consulted with me and then consulted with MartyO prior to the modified valve body install (jmod) during the upgrade and tune at MartyO's shop back in August. Very pleased with the results.
    Current Garage:

    2005 Mustang GT Premium
    2019 Ranger Lariat Super Crewcab 4WD
    2015 Triumph Trophy SE



    “You've gotta dance like there's nobody watching,
    Love like you'll never be hurt,
    Sing like there's nobody listening,
    And live like it's heaven on earth.”
    William W. Purkey

  6. #6
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    Quote Originally Posted by 376shovel View Post
    Says page not found.

    I was thinking of buying this pre drilled kit:

    https://www.bcawebstore.com/index.ph...ct_detail&p=24
    Those aren't Eric's. Darren runs BCA.
    Eric's work is worth the wait. Give him time to reply.
    I don't trust anyone else. Good and honest broker!

  7. #7
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    Quote Originally Posted by 376shovel View Post
    Are you guys still doing the j mod? What is the most up to date way you are having success?

    Did J-mod on trans 9/30/12. Took about 2.5 hours taking my time following instructions. After doing your 1st the job could be done in 1.5 hour, maybe even less.

    Very easy simple mod any MM owner can do who has any mechanical aptitude.

    I ordered a Racing HP 4R70W Super Tuf separator plate. It is thicker to prevent the cracking problem from being hammered by 1-2 actuator piston.

    Cost:
    $24 for separator plate
    $4 for gasket 1
    $3 for gasket 2
    Filter Kit
    10 qts ATF

    This is a must do for performance car lovers and one of the cheapest mods!

    Performance Automotive and Transmission Center
    2134-A East Texas Street
    Bossier City, LA 71111
    318-742-7754
    http://www.transmissioncenter.net/aode.htm

    Part #8SP ($24) ordered 3, showed up at my door in 2 weeks.
    These instructions are spot on except for the location of the small plastic screen that falls out when valve body is removed. It goes in the RF corner, not RR as stated in instructions: http://www.crownvic.net/tech/4R70Wnotes.pdf

    I drilled #7 to 1/8" also which was in the instructions for older transmissions.

    I did the #10 for reverse as the gear delay with OEM drove me nuts.

    Have fun, I enjoyed doing the procedure.

    The results are great!

    WLB
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  8. #8
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    Quote Originally Posted by Invective View Post
    Contact 88grandmarq here on this board or:


    https://www.facebook.com/North-Georg...Repair-3484146

    Yep, I am up in Indiana now. I have Jmod kits available.
    I rebuild AOD/AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/pages/North...48414635312478

  9. #9
    Quote Originally Posted by 88grandmarq View Post
    Yep, I am up in Indiana now. I have Jmod kits available.
    Whereabouts in Indy are you?

    Sent from my LGLS755 using Tapatalk

  10. #10
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    Quote Originally Posted by tobiasg1995 View Post
    Whereabouts in Indy are you?

    Sent from my LGLS755 using Tapatalk
    sent you a PM
    I rebuild AOD/AODE/4R70W/4R75E Transmissions, check out my Facebook page for my latest project; https://www.facebook.com/pages/North...48414635312478

  11. #11

    2004 Silver Birch
    300B
    Build date:9/29/2003, Adopted on 12/02/05
    Exhaust by Greg
    13.630 @ 100.49 mph (11/21/10)

    2015 Ford Focus SE Sport FWD
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    1989.5 Ford Mustang 5.0 LXsport

  12. #12
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    I collected the parts for my J-Mod. Used a predrilled Tuff Plate. If I did it again I'd definitely buy from 88grandmarq.
    “When you can’t make them see the light, make them feel the heat.”
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    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

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  13. #13
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    Quote Originally Posted by fastblackmerc View Post
    I collected the parts for my J-Mod. Used a predrilled Tuff Plate. If I did it again I'd definitely buy from 88grandmarq.
    Thats exactly what i did.
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

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