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Thread: 4l80e length

  1. #1

    Default 4l80e length

    I have a 91 gmc vandura with a 454 and blown 4l80e and cant locate a used tranny for my 146" wheelbase and I am wondering if anybody knows what the difference is in the transmission from the 125 inch wheelbase to the 146 inch wheelbase and if it is something I can easily change from my old transmission to make the more readily available 125" work

  2. #2


    The only difference should be the length of the driveshaft. I dont believe there is any difference in the transmission.
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  3. #3


    If there is any difference, it would be in the tail piece of the transmission. The tail piece is removable (not used on the 4x4 trucks) and should be swap-able.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  4. #4

    Join Date
    Feb 2008
    Red Wing, Minnesota, United States


    4L80e?? WWouldn't it have the 700r4, I didn't think the electronic ones didn't hit the vans and suburban s until redesign in 1992? Maybe am wrong
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual

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