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Thread: 4l80 conversion or 4l65e from flt

  1. #1
    Here are the thought processes or questions.

    5.3 whipple charged z71. 80e conversion or 4l65 I only want an FLT tranny there are no others that I would consider.

    The conversion kit can be seen at the link below

    http://speed-eng.com/store/product_info.ph...roducts_id=7610

    the 65 at flt is below


    http://finishlinetrans.com/store/product_i...;products_id=31

    Is the speed eng 4l80 by FLT? For the money which one is gonna be better and live longer.

    I also thought seriously about changing from part time 4 wheel drive to all the time awd by using a transfer case from an gmc c3 truck. Would I have to have any other parts besides the transfer case to install this. Also would it act like my truck does now on pavement in 4wd?
    I eventually want to upgrade to a big motor and want the trans to be able to handle at least 500 rwhp.

    Any thoughts or suggestions would be appreciated.
    Also I tow a 17' enclosed trailer at least 2 times a weak so reliability is important.
    Thanks
    Jake

    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

  2. #2
    Join Date
    Aug 2005
    Location
    St. Anthony, Indiana
    Posts
    1,592
    I think you will be fine with the FLT. They rate the lvl 5 trans at 500-550hp. Give Chuck a call at FLT and talk it over with him. The FLT tranny is excellent.

  3. #3
    Join Date
    Nov 2006
    Location
    Plano, TX
    Posts
    230
    If you are under 600 lb-ft of torque I would stick with the 65e, because of the better 1st & 2nd ratios; those 80e's eat a lot of hp.

    Mr. P.

  4. #4
    <div class='quotetop'>QUOTE(Mister P &#064; Dec 13 2006, 03&#58;27 PM) [snapback]76231[/snapback]</div>
    If you are under 600 lb-ft of torque I would stick with the 65e, because of the better 1st & 2nd ratios; those 80e&#39;s eat a lot of hp.

    Mr. P.
    [/b]
    Thanks for the input.
    Here is a video I made.
    http://video.performancetrucks.net/video/5...89701606f3e.htm

    watch the 2nd gear shift. sad . . . . . .
    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

  5. #5
    Join Date
    May 2004
    Location
    NAS China Lake California
    Posts
    132
    nice vid......I thought you were only supposed to lay rubber in 1st with an auto trans....something about it trying to shift while there is resistance against the drive-line instead of JUST the tires sliping......or something...ha ha....I just remember my pops saying something like that when I was in highschool......maybe thats just one of those old man to dumb teenager things.......

    any truth to that with th 4l60&#39;s VS an older trans with no electronics?

    I dont mean to thread jack here....just askin cause that might wear out that 1-2 shift like a sprag in a 400...

  6. #6
    <div class='quotetop'>QUOTE(JeRM82 &#064; Dec 15 2006, 11&#58;36 PM) [snapback]76465[/snapback]</div>
    nice vid......I thought you were only supposed to lay rubber in 1st with an auto trans....something about it trying to shift while there is resistance against the drive-line instead of JUST the tires sliping......or something...ha ha....I just remember my pops saying something like that when I was in highschool......maybe thats just one of those old man to dumb teenager things.......

    any truth to that with th 4l60&#39;s VS an older trans with no electronics?

    I dont mean to thread jack here....just askin cause that might wear out that 1-2 shift like a sprag in a 400...
    [/b]

    4l65e From FLT on order. Thank you all for the help.

    99z71 5.3 whipple charged nelson tuned Soon to be FLT trannied.
    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

  7. #7
    Join Date
    Feb 2005
    Location
    San Antonio Tx
    Posts
    554
    <div class='quotetop'>QUOTE(zeake &#064; Dec 19 2006, 06&#58;46 AM) [snapback]76695[/snapback]</div>
    4l65e From FLT on order. Thank you all for the help.

    99z71 5.3 whipple charged nelson tuned Soon to be FLT trannied.
    [/b]
    I will be ordering mine very soon I hope... But mine wont die&#33;&#33;&#33;
    02 Chevy EcSb Z71, 5.3, Helix Tb Spacer, AEM Brute Froce Intake, Msd 8.5 wires, NGKTR55 IX, B&M 25k Trans Cooler, Hypertech 160, Nelson Tune, Nelson Harness & Ls1 fans, Fully Built tranny, tb2600, 216/224 551/551 115LSA, yeller z06 springs, magnaflow, cut-out, hi-flow cats, etc...

  8. #8
    Wow. Accidentally came across my old thread. I should have gone 4l80.
    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

  9. #9
    Join Date
    Oct 2003
    Location
    Navarre, FL
    Posts
    199
    LOL...why? Did the 65e not hold up?

  10. #10
    Quote Originally Posted by Smoky02 View Post
    LOL...why? Did the 65e not hold up?
    Once I got rid if the crappy whipple and went turbo and awd the trans could not hold it. If you never plan to go more than 500hp you might be ok. I have surpassed that and the trans did really good for several years. If I had went 4l80 it would still be alive and my wife would be happier.
    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

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