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  1. #11

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    Nice looking truck. The 700R4 is just as strong if not stronger than a 350. It also has lower gear ratio. Forget about an external overdrive. It won't work on a 4X4.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  2. #12

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    I'm not debating you, but very few people endorse the 700R4 in a heavy duty application. It would be the best of both worlds for sure, nice low first, and OD.

    As for the overdrive unit on a 4X4, a quick Google search:

    http://www.gearvendors.com/4x4.html
    When you hear hoofbeats, look for horses not zebras.

  3. #13

    Default

    I have been rebuilding transmissions since 1972.

    As far a shear strength in low gear I'm here to tell you the 700 is stronger than the 350. That being said the 700 is an overdrive transmission and there lies it's weakness.

    The Gear Vendors OD only works in 2WD. Why anyone would want one of these on a 350 is beyond me. I have driven several of these and they are a noisy POS.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  4. #14

    Default

    Well, if I were going to spend 3 grand, I would just go with a 4L80e, anyway.
    When you hear hoofbeats, look for horses not zebras.

  5. #15

    Default

    Quote Originally Posted by 2COR517 View Post
    Well, if I were going to spend 3 grand, I would just go with a 4L80e, anyway.
    Ditto on the 4L80E. The only problem doing a 4L80E swap is the computer. There are aftermarket computers available but they are expensive. The 4L80E is the strongest GM transmission besides the Allison which is in a class by itself.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  6. #16
    Legend

    Join Date
    Aug 2008
    Location
    East of Branson, Missouri
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    2,788
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    Default

    Quote Originally Posted by Jimmiee View Post
    Ditto on the 4L80E. The only problem doing a 4L80E swap is the computer. There are aftermarket computers available but they are expensive. The 4L80E is the strongest GM transmission besides the Allison which is in a class by itself.

    Just to let everyone know - if ever I have any transmission problems, whatever the problem may be, I'm towing the Suburban to Reno to see Jim.
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




  7. #17

    Default

    Did GM ever put the 4L80e behind TBI? I already have TBI. Could I put the computer in from say a 95 K2500 donor truck? And would the 4L80e match up to my NP205?
    When you hear hoofbeats, look for horses not zebras.

  8. #18

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