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Thread: 4L60E issues

  1. #1
    Tuner in Training
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    4L60E issues

    Hey everyone.

    i got a buddy that did the 896 pcm swap in his 98 vette. The pcm came from a 2000 silverado 2500.


    His issue is when he flashes the corvette OS to the 896 motor and everything works great. but transmission is acting up like not selecting gears properly, Falling out of gear.
    If he loads the silverado tune, Tranmission works totally fine but motor obviously doesn't run correct.

    Any ideas?
    1997 Corvette
    Ls1 motor,5.3L ported heads,(polished exhaust, golf balled intake), BTR.660 dual springs,Stock valve size, .051" head gasket. BTR stage 4 N/A ls cam, 10.9:1 compression, Blackwing intake,Ported throttle body, LS6 intake manifold, Ford Green top injectors 42#, 0411 swapped, AEM UEGO, Nitrous oulet plate kit running 200 shot 110+ dedicacted fuel, LPE timing retard box, BR7EF plugs, EGR delete/air pump delete.

  2. #2
    My 896 has a choice for a 4L60E. Did he pick that in his tune?

    Rick
    1970 Chevrolet El Camino LM7 5.3 liter mill and a 4L60E transmission.

  3. #3
    Tuner in Training
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    Yes, we have even tried copying all transmission settings from the stock truck tune to the corvette tune file. With no positive effects.
    1997 Corvette
    Ls1 motor,5.3L ported heads,(polished exhaust, golf balled intake), BTR.660 dual springs,Stock valve size, .051" head gasket. BTR stage 4 N/A ls cam, 10.9:1 compression, Blackwing intake,Ported throttle body, LS6 intake manifold, Ford Green top injectors 42#, 0411 swapped, AEM UEGO, Nitrous oulet plate kit running 200 shot 110+ dedicacted fuel, LPE timing retard box, BR7EF plugs, EGR delete/air pump delete.

  4. #4
    Tuner
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    Did you copy over the info on the engine side for torque management ?
    Gen3 L59/4L60E LS3 cast manifolds, Small Cam change, 2800 Convertor, MPVI, using MTX-L for wideband tuning

  5. #5
    Tuner in Training
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    Quote Originally Posted by jsf55 View Post
    Did you copy over the info on the engine side for torque management ?
    Engine side is all Corvette and we put all truck stuff on the transmission side seeing if that would work?
    1997 Corvette
    Ls1 motor,5.3L ported heads,(polished exhaust, golf balled intake), BTR.660 dual springs,Stock valve size, .051" head gasket. BTR stage 4 N/A ls cam, 10.9:1 compression, Blackwing intake,Ported throttle body, LS6 intake manifold, Ford Green top injectors 42#, 0411 swapped, AEM UEGO, Nitrous oulet plate kit running 200 shot 110+ dedicacted fuel, LPE timing retard box, BR7EF plugs, EGR delete/air pump delete.

  6. #6
    Tuner
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    Compare the truck info on the engine side under torque management with the corvette one, just open 2 windows and view it, it may be quite a difference between the 2
    Gen3 L59/4L60E LS3 cast manifolds, Small Cam change, 2800 Convertor, MPVI, using MTX-L for wideband tuning

  7. #7
    Potential Tuner High ho silverado's Avatar
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    The 80e tune is different for the pinouts/wiring on the trans plug and at the pcm, unless you do a segment swap on the pcm it wont work right. Im a little confused with this, are you doing a write entire when your loading the corvette os into the truck pcm or just a write calibration. Or did he put a 4l80 in the vette and hes trying to get it to work? confused?
    Last edited by High ho silverado; 12-16-2019 at 05:50 PM.
    Dan G

    83 Silverado, lq4, 4l60e, highway queen
    79 malibu, 5.3 slow twin turbo build
    00 camaro z28
    13 gmc seirra, all stock dd