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Thread: How to 4L60E to 4L80E trans swap

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  1. #1
    Join Date
    May 2008
    Location
    wichita falls, tx
    Posts
    613
    i would say about a 3000-3200 and i would NOT go with a monster tranmission to many horror stories

    Junkyard 5.3 milled heads 200 shot, built 4l80e with circle D 4000 multi disc converter
    EPS cam 23x/23x 600/603 112lsa
    KP 6 link bagged with Accuair E-Level
    http://www.nitrousexpress.com/

  2. #2
    Join Date
    Dec 2009
    Location
    Corona, CA
    Posts
    204
    Hey Allen,
    According to the link below "The 4L80E requires a speed sensor, which the 4L60E doesn't have. This is where the new speed sensor harness comes into play. It carries the signal from the speed sensor to the truck's ECM. One end simply plugs into the speed sensor as shown here. View Related Article" I did not see this mentioned in your writeup so I'm curious if it's needed?
    http://www.fourwheeler.com/techartic.../photo_05.html

    Let me know
    Thanks
    2007 GMT900 CCSB 5.3 VTS2300 Twin Screw Supercharger, Doug Thorley LT's, True 3" Duals into Dynomax Race Bullets, Nelson Tune, 4L80e w/transgo HD2-D, Truetrac, 4.10 r&p
    Need list: Stall, PLX 200 for my crappy AFR, X-pipe, GM 20's.

  3. #3
    Join Date
    Jan 2011
    Location
    Mesa, AZ
    Posts
    53
    Quick question for you guys with the 60E to 80E swap on a ccsb. Is the crossmember mod necessary on these too or is it just on reg cab and ext cabs?
    05 CCSB, Volant CAI, LS2, XER281HR, stage 2 p&p with spring's, pacesetter LTs, offroad Y pipe,magnaflow muffler, 4-6 drop w/ helper bags, 20's, steel cowl hood, shaved gate, roll pan, 3000 circle D, 40k trans cooler, HIDs and someother little upgrades.
    68 Camaro, 454 BBC

  4. #4
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    Quote Originally Posted by armymech69 View Post
    Quick question for you guys with the 60E to 80E swap on a ccsb. Is the crossmember mod necessary on these too or is it just on reg cab and ext cabs?
    It's necessary on all the crossmembers. The 80e is longer, therefore you need to extend the xmember.

  5. #5
    Join Date
    Mar 2007
    Posts
    1,705


  6. #6
    Join Date
    Jan 2011
    Location
    Mesa, AZ
    Posts
    53
    Thanks, No one makes a crosmember for this swap or is it just big bucks so everyone does their own welding?
    05 CCSB, Volant CAI, LS2, XER281HR, stage 2 p&p with spring's, pacesetter LTs, offroad Y pipe,magnaflow muffler, 4-6 drop w/ helper bags, 20's, steel cowl hood, shaved gate, roll pan, 3000 circle D, 40k trans cooler, HIDs and someother little upgrades.
    68 Camaro, 454 BBC

  7. #7
    Join Date
    Mar 2007
    Posts
    1,705
    #10C. Crossmember for the 4L60E to 4L80E transmission conversion, 2000 up Tahoe and some others. This custom made crossmember moves the transmission mount to the correct position for the 4WD Tahoe 4L60E to 4L80E conversion. Works with the #3XX deep cast aluminum pan that holds 3 3/4 extra quarts of fluid. Cost $350.00. On some trucks the crossmember will slide to the rear. This price includes a $160.00 core charge, return your old crossmember in good undamaged condition for a refund.

    #10C2. Crossmember for the 4L60E to 4L80E transmission conversion, 2000 up Tahoe and some others. This custom made crossmember moves the transmission mount to the correct position for the 4WD Tahoe 4L60E to 4L80E conversion. Must be used with a late model type pan. Cost $330.00. On some trucks the crossmember will slide to the rear. This price includes a $160.00 core charge, return your old crossmember in good undamaged condition for a refund.

    #10D. Crossmember for the 4L60E to 4L80E transmission conversion, 2007 up Tahoe (NEW BODY STYLE) and some others. This custom made crossmember moves the transmission mount to the correct position for the 4WD Tahoe 4L60E to 4L80E conversion. Works with the #3XX deep cast aluminum pan that holds 3 3/4 extra quarts of fluid. This crossmember isn't the same as #10C. Cost $330.00


    http://www.transmissioncenter.net/4L...4L80E_Swap.htm

    choose your poison !

  8. #8
    Join Date
    Nov 2018
    Posts
    1
    I have a 1993 GMC K 1500 Suburban that currently has the 4L60E transmission in it and I want to swap it with a 97 K 2500 4 L 80 e transmission. What all do I need for this?

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