6L80/90 Tranny Conversion for Pre 08 H2s

[whitehumh2]

Hey Guys,



I know that John is looking for a tranny for his H2 and I thought why not post some good info of a potential upgrade.



The Broken had some 6L80/90 trannies a while back and now there is a conversion kit that we can use to install them in our H2s! Finally!



This tranny would give a huge increase to fuel economy, driveability, towing capacity and strength! It is a relatively straight forward swap and while it does require some parts they are more than worth the effort!



Super low crawl ratio and 2 overdrive gears!!! Who can say no to that!



Check out the following link for swap info:



http://www.tbmsport.com/6l80egm6spdconv ... nents.html



Hope this Helps!





Kev

[whitehumh2]

John DON'T DO IT!!!!!



While the 4L80e is a much stronger tranny you will not be pleased with the driveability!!!



First gear on a 4L65....3.06:1

First gear on a 4L80....2.48:1 that means that your take off would suck and that your crawl ratio would drop from 33:1 with the 4L65 to a crappy 26.84:1 What does this means it means that you would have no real offroad ability and that your H2 would bog even in the slightest sight of mud!



I would suggest keeping the 4L65 or the upgrade to the 6L80/90 but stay away from the 4L80!!!



Just my 2 cents!



Kev

[Khamul]

If y'all want my 2 cents...... I love my tranny!!! the 6 speed is a very nice tranny and provides a bit lower gearing which helps with offroading, towing etc etc..



It's tempting to regear since I went to 37's from the stock 34.5's.... but that's my own doing.... the 6 speed is nice especially if this upgrades comes with the manual selector for the steering wheel as offroading - I am always in manual as I like the extra control!

[dwaxman1]

I like my stock tranny, it has never let me down....

[Khamul]

You'd love that 6 spd!!! Trust me!

[cbrandson]

has anyone done this mod? or do i have to be the (ginnia pig) lol ,like this one