4l80 conversion or 4l65e from flt

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

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.

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.

<div class='quotetop'>QUOTE(Mister P &#064; Dec 13 2006, 03&#58;27 PM) [snapback]76231[/snapback]</div>

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

watch the 2nd gear shift. sad . . . . . .

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...

<div class='quotetop'>QUOTE(JeRM82 &#064; Dec 15 2006, 11&#58;36 PM) [snapback]76465[/snapback]</div>

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

99z71 5.3 whipple charged nelson tuned Soon to be FLT trannied.

<div class='quotetop'>QUOTE(zeake &#064; Dec 19 2006, 06&#58;46 AM) [snapback]76695[/snapback]</div>

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

99z71 5.3 whipple charged nelson tuned Soon to be FLT trannied.
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I will be ordering mine very soon I hope... But mine wont die&#33;&#33;&#33;

Wow. Accidentally came across my old thread. I should have gone 4l80.

LOL...why? Did the 65e not hold up?

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Originally Posted by Smoky02

LOL...why? Did the 65e not hold up?

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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. :LOL:

im trying to make the same decision, i cant get motivated to do an 80e swap though