Anything I should look for? What yrs are better? Out of which vehicale? I have a 99 silverado 4x4 with a 2003 6.0. I think I read somewhere there were different final drive ratios an I want to get the right one for the application.
Anything I should look for? What yrs are better? Out of which vehicale? I have a 99 silverado 4x4 with a 2003 6.0. I think I read somewhere there were different final drive ratios an I want to get the right one for the application.
Unless a unit has an after market gear set in it, the ratio's are all the same. Personally any unit 99 and later is fine by me. You obviously should look for one out of a 4X4 truck. Vince B
Goodbye from Vince @ FLT thread.http://www.ls1tech.com/forums/racers...vince-flt.html
would a level 4 4l60e be worth it built with about 500 hp or do i need to step up to the 80e?
He would answer it much better obviously, but until he does, I think their level 5 transmission is rated around 500-550 in a big truck.Originally Posted by blownwhite03
If you really never want to worry about it I'd get their level 7. It's pricey, but it's as strong as a 4l60e gets.
With anything 500rwhp and more in a truck I would bump up to a 80E. I had a fully built LVL5 70E from a big name company, and it did good at 450rwhp (for 2500 miles) and as soon as we upped to 564rwhp it lasted about 2 weeks... Needless to say I don't like doing things over and over and over and over again, so I had a local builder build me a 80E and Im pusing 650rwhp now and no issues at all. Plus Ive been beating the hell out of it too....Spraying in OD running up past 150mph with no issues at all....
There are some 80e transmissions that came in motorcoaches and utility trucks that have a lower 1st gear set, according to numerous sites.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Unable to confirm, Greg yet possible. Jon is correct....cross the 500 wheel power barrier and look for an 80 swap for sure. That doesn't mean a 60 will hold 350 forever either.
Personally I think the 80 is the best solution. However most people do not want to go through the conversion. It can be very pricy depending on how you go about it. Keep in mind some guys do not have the mechanical skills to take a project like this on. So that leaves them with having to pay someone to do it for them plus the price of the 80e.
The level 7 4l60e that FLT sells has the best of the best hard parts available for this transmission. We have not had a hard part failure to date with this transmission. We have only seen issues with soft parts and it has been pushed successfully over 650rwhp in a truck. With that being said it is a good solution but not the cure.
Obviously the weight of your trucks is a major factor. You will still see soft part failures in either an 80 or a 60. The 80's do take it better than the 60 but they to have their share of issues. The 80 trans is a truck trans and imo the 60 series trans is more of a car transmission. Got to love GM!
blownwhite03 To answer your question, I feel that you are in between the two transmissions. This will depend on what your purpose of the vehicle is and also what you are planning in the future. 500 at the wheels is something that a level 5 with a billet output would be a must. The level 7 is a good upgrade and for the current price it is a no brainer if you plan on staying with a 60 series unit. Feel free to give us a call if there is something we can do for you.
I do not believe there is a different ratio even on these. These units came with straight cut planets. If the ring gear, sun gear and planet pinion gears still have the same tooth counts, the ratio would still be the same. I will have to look into this furthur. Vince B
Goodbye from Vince @ FLT thread.http://www.ls1tech.com/forums/racers...vince-flt.html
i looked on the site and dident see a level 7 60e i saw a 65 e 70e whats the price and what entails an 80e swap the fly wheel cross member?
4l70e/4l65e/4l60e all will swap assuming you have the right output shaft(think 2wd/4wd).
Their level 7 4l70e will work for your truck.
As far as the 4l80e swap, it's a little more involved than that. I am beginning to collect parts for it myself.
You'll need to section your crossmember, get a segment swap for your tune, swap a few vss wires, shorten your driveshaft or swap to a different yolk, among other things.
I'm sure others will offer more in depth answer or correct me where my flaws may lie, but basically you'll need a bunch of little things to get it going. I've heard most usually take a long weekend to do it with plenty of beer.
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