can 4l60e holds more than 400 hp????
09-13-2006, 08:55 AM
#1
can 4l60e holds more than 400 hp???? guys is there is any hope? that a 4l60e can holds more than 400 hp cuz i did try tci overhaul kit,and bnm oil cooler but the clutches burnd twice and the drum twisted!!!! 
so i wanna know is there is an overhaul kit can do better cuz i made a lot of upgrades to the engine to be more than 450hp but am stuck with trany issue. plz help 
so i wanna know is there is an overhaul kit can do better cuz i made a lot of upgrades to the engine to be more than 450hp but am stuck with trany issue. plz help 
09-13-2006, 09:12 AM
#2
4l60e over 400hp absolutley Yes sure they can easily , the deal with the 4l60e is theres much more to making them work than just throwing some good parts in and a massive shift kit , It took us years of trial and error re engineering and studying to figure out just what you can and cant do , For instance 4l60e transmissions dont like monster line preasure , severley restrict or block accumulators and your asking for trouble , The rules that apply to the old th400 and the th350 ect just dont apply the same ,
A 4l60e durability in hp applications is just as much a product of the builder and the technology as it is the parts used ,
A 4l60e durability in hp applications is just as much a product of the builder and the technology as it is the parts used ,
Last edited by JNorris; 09-13-2006 at 07:31 PM.
09-13-2006, 05:12 PM
#5
Yes, when done right they can hold up very well in fast vehicles. I have a few in the low 10's, and one in the mid to low 9's (daily driver), so I would say that they can be built to take some abuse.
09-13-2006, 08:26 PM
#6
Feel free to share knowledge. Discussing pricing, production capablity etc. is non-sponsor pimping.
There are a number of places that can make a 4l60 hold 400hp. How many that last behind 550 rwhp (400 NA + 150 shot) tends to be rare without an annual inspection and some maintenance.
There are a number of places that can make a 4l60 hold 400hp. How many that last behind 550 rwhp (400 NA + 150 shot) tends to be rare without an annual inspection and some maintenance.
09-13-2006, 08:53 PM
#7
Tech Resident
you're screwing up your 4L60E because you're cammed and raised the shift points. want your 4L60E to last? put your shift points at 6,000 rpm's or less and your STOCK 4L60E will take 400rwhp all day every day for a long time.
on that note, put your shift points at 6,800 rpm's and put down 300rwhp and watch your 4L60E blow up.
RPM's are the biggest killer of the 4L60E, not power. go look at some FI cars running stock 4L60E's. they seem to last quite a while with stock shift points.
https://ls1tech.com/forums/showthrea...ht=Effect+RPMs
well, i know your answer already, "no way in hell am i putting my shift points at 6,000 rpm's you idiot, that's why i got the cam!"
well, in response to that, you'll have to get a built 4L60E, but yes it can be done very easily. there's plenty of guys on this site running 4L60E's with as much as 600rwhp and not having a single problem thus far.
on that note, put your shift points at 6,800 rpm's and put down 300rwhp and watch your 4L60E blow up.
RPM's are the biggest killer of the 4L60E, not power. go look at some FI cars running stock 4L60E's. they seem to last quite a while with stock shift points.
https://ls1tech.com/forums/showthrea...ht=Effect+RPMs
well, i know your answer already, "no way in hell am i putting my shift points at 6,000 rpm's you idiot, that's why i got the cam!"
well, in response to that, you'll have to get a built 4L60E, but yes it can be done very easily. there's plenty of guys on this site running 4L60E's with as much as 600rwhp and not having a single problem thus far.
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09-14-2006, 09:01 PM
#11
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Originally Posted by ChocoTaco369
you're screwing up your 4L60E because you're cammed and raised the shift points. want your 4L60E to last? put your shift points at 6,000 rpm's or less and your STOCK 4L60E will take 400rwhp all day every day for a long time.
on that note, put your shift points at 6,800 rpm's and put down 300rwhp and watch your 4L60E blow up.
RPM's are the biggest killer of the 4L60E, not power. go look at some FI cars running stock 4L60E's. they seem to last quite a while with stock shift points.
https://ls1tech.com/forums/showthrea...ht=Effect+RPMs
well, i know your answer already, "no way in hell am i putting my shift points at 6,000 rpm's you idiot, that's why i got the cam!"
well, in response to that, you'll have to get a built 4L60E, but yes it can be done very easily. there's plenty of guys on this site running 4L60E's with as much as 600rwhp and not having a single problem thus far.
on that note, put your shift points at 6,800 rpm's and put down 300rwhp and watch your 4L60E blow up.
RPM's are the biggest killer of the 4L60E, not power. go look at some FI cars running stock 4L60E's. they seem to last quite a while with stock shift points.
https://ls1tech.com/forums/showthrea...ht=Effect+RPMs
well, i know your answer already, "no way in hell am i putting my shift points at 6,000 rpm's you idiot, that's why i got the cam!"
well, in response to that, you'll have to get a built 4L60E, but yes it can be done very easily. there's plenty of guys on this site running 4L60E's with as much as 600rwhp and not having a single problem thus far.
I have 145 passes, ~550rwhp, My shift points are raised.......6900 is my rev limiter. On a well prepped track I am cutting 1.5's all day long on my 4000lb pig of a gto and get this, I spray a 100shot on top of the magnacharger and I spray thru the shifts and
wait for it....................
Still on my stock tranny.......
2yrs now still running strong. I've had the blower 20months now.
My car was built on a good day!
(knocking on wood)
09-14-2006, 09:13 PM
#12
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Originally Posted by Vince @ FLT
I'm not scared.
i dont know if im gonna stick with this tranny or not .. maybe ill send my spare 4l60e to you so that it can be built ....
09-14-2006, 09:35 PM
#14
Originally Posted by z28hustle
just when i ws thinking about trading for that th400 here you come with some stuff like this for me ...
i dont know if im gonna stick with this tranny or not .. maybe ill send my spare 4l60e to you so that it can be built ....
i dont know if im gonna stick with this tranny or not .. maybe ill send my spare 4l60e to you so that it can be built ....
09-14-2006, 09:49 PM
#15
knock on wood... i made 411rwp with my heads/cam setup...have 51k miles on my stock tranny with a ss3600 stall and its running great, i rev it up to 6800 shift points and it hitts the mark everytime! Have about 6-7 passes on it with the setup at the track and numerous on the street, had all the bolt ons on the car for a few years. Im happy 
09-15-2006, 07:32 PM
#16
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I can get you a carbon copy of the old are tranny, the 4L60E good to 9.2@155 numerous times without breaking. We replaced high gear clutches twice for maintinance, once mid summer, and another at the end of the year. This was a heavy nitrous fogger c5.
09-15-2006, 08:12 PM
#17
Originally Posted by ChocoTaco369
you're screwing up your 4L60E because you're cammed and raised the shift points. want your 4L60E to last? put your shift points at 6,000 rpm's or less and your STOCK 4L60E will take 400rwhp all day every day for a long time.
on that note, put your shift points at 6,800 rpm's and put down 300rwhp and watch your 4L60E blow up.
RPM's are the biggest killer of the 4L60E, not power. go look at some FI cars running stock 4L60E's. they seem to last quite a while with stock shift points.
https://ls1tech.com/forums/showthrea...ht=Effect+RPMs
well, i know your answer already, "no way in hell am i putting my shift points at 6,000 rpm's you idiot, that's why i got the cam!"
well, in response to that, you'll have to get a built 4L60E, but yes it can be done very easily. there's plenty of guys on this site running 4L60E's with as much as 600rwhp and not having a single problem thus far.
on that note, put your shift points at 6,800 rpm's and put down 300rwhp and watch your 4L60E blow up.
RPM's are the biggest killer of the 4L60E, not power. go look at some FI cars running stock 4L60E's. they seem to last quite a while with stock shift points.
https://ls1tech.com/forums/showthrea...ht=Effect+RPMs
well, i know your answer already, "no way in hell am i putting my shift points at 6,000 rpm's you idiot, that's why i got the cam!"
well, in response to that, you'll have to get a built 4L60E, but yes it can be done very easily. there's plenty of guys on this site running 4L60E's with as much as 600rwhp and not having a single problem thus far.
09-15-2006, 10:16 PM
#20
Tech Resident
Originally Posted by 02 BLK WS6
Where do you come up with rpm's killing the tranny???? Where is your proof to support this claim? If you are a professional tranny builder then I'll shut up, until then it's just your oppinion. I am in the process of talking with my tranny builder on building a 4l60e and plan on going all out. He has been building trannies for 30+ years and has done a few for me. I want the reliability of a built TH350.
or if you don't believe me, how about GM?
from a GM powertrain engineer:
our transmissions are limited by RPM because the rotating inertia of the part, combined with a sudden change in RPM, cause the parts to break. Those RPM limits are set to avoid having shift changes break parts. Say an RPM change from 6500 down to (for example) 3000, this is what break (OE) parts.