Built 4l65e vs boost
First... Thank you for the insult ;-)
I do not feel that you are a fool. Should I have; I would just say it.
On the contrary... You usually seem to grasp everything we discuss. So again; I do not think you as a fool.
Now in regard to the use of the over-drive gear range:
-Yes, there are plenty of builders who do not build their transmissions to handle power in over-drive (I feel this is a big mistake).
-Yes, the over-drive gear range is not intended to be used for racing...
However, that it is not for reasons pertaining to power handling...
It is because the over-drive gear range puts the engine at a massive disadvantage in terms of gearing/ gear multiplication.
Trying to accelerate the engine at low RPM in over-drive can be extremely taxing on the engine...
Particularly the connecting rods and can be a bad idea in certain situations.
The same thing goes for a T-56/ TR6060 six speed manual transmission with it's double over-drive gear ranges.
Knowing the engine and transmission inside and out is always a good idea to try and make the lives of such, as long as possible.
I do not feel that you are a fool. Should I have; I would just say it.
On the contrary... You usually seem to grasp everything we discuss. So again; I do not think you as a fool.
Now in regard to the use of the over-drive gear range:
-Yes, there are plenty of builders who do not build their transmissions to handle power in over-drive (I feel this is a big mistake).
-Yes, the over-drive gear range is not intended to be used for racing...
However, that it is not for reasons pertaining to power handling...
It is because the over-drive gear range puts the engine at a massive disadvantage in terms of gearing/ gear multiplication.
Trying to accelerate the engine at low RPM in over-drive can be extremely taxing on the engine...
Particularly the connecting rods and can be a bad idea in certain situations.
The same thing goes for a T-56/ TR6060 six speed manual transmission with it's double over-drive gear ranges.
Knowing the engine and transmission inside and out is always a good idea to try and make the lives of such, as long as possible.
i always make efforts to make 4th hold as much as possible. But my car has around 700hp and I just think it’s just too much of a load everything shifting to OD full throttle. Just my strong belief.
You know the stock fourth apply piston has slighlty more surface area than the corvette servo. And theres aftermarket which should be used when running a 600 hp trans with a 700 hp engine.
Your problem is you're stuck on this 700hp ****. Not everyone is running at the limit of their transmissions abilities. You need to step outside the box because you got lost in it and can't find your way out.
Your problem is you're stuck on this 700hp ****. Not everyone is running at the limit of their transmissions abilities. You need to step outside the box because you got lost in it and can't find your way out.
You know the stock fourth apply piston has slighlty more surface area than the corvette servo. And theres aftermarket which should be used when running a 600 hp trans with a 700 hp engine.
Your problem is you're stuck on this 700hp ****. Not everyone is running at the limit of their transmissions abilities. You need to step outside the box because you got lost in it and can't find your way out.
Your problem is you're stuck on this 700hp ****. Not everyone is running at the limit of their transmissions abilities. You need to step outside the box because you got lost in it and can't find your way out.
go back and read post number 1. Maybe you’ll get it. Maybe you won’t. He stated 700-800hp. So I’m not so sure what the confusion is. Smh.
It’s bullshit that I say it’s a bad idea to shift into overdrive at full throttle with a boosted build (that’s what this ******* thread is about if you read the title) and think it’s going to live? You’re either drunk, delusional or just plain ignorant. You don’t have to buy **** buddy, I ain’t trying to sell you a damn thing. I’m a 4l60e “fanboy”, but I’m not dumb. I know it limitations. And the OP asked if it would hold up in a 4000lb truck behind a boosted motor. And somehow we go on the subject of shifting to overdrive with it.....In a boosted 4000lb truck.....not a good idea no matter who built it and no matter what you say. Period. Buy it. Not buy it. I don’t **** a give.
go back and read post number 1. Maybe you’ll get it. Maybe you won’t. He stated 700-800hp. So I’m not so sure what the confusion is. Smh.
go back and read post number 1. Maybe you’ll get it. Maybe you won’t. He stated 700-800hp. So I’m not so sure what the confusion is. Smh.
Thats awesome, you typed SMH. What Are you 13....
So if thats the case HOLY POT MEET KETTLE, how does the guy who preaches TM saves transmissions going to go on and on about how a 3-4 shift will kill it......
If too much power can kill it, take your 700hp engine and choke it down to 250hp on the shifts with TM since it's almost 2020 and we have that technology.
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Verdad Gallardo Hey I'm not using it. But how is someone going to say too much power will kill a 4L60E BUT DON'T YOU GET RID OF TM!!!!!
So if thats the case HOLY POT MEET KETTLE, how does the guy who preaches TM saves transmissions going to go on and on about how a 3-4 shift will kill it......
If too much power can kill it, take your 700hp engine and choke it down to 250hp on the shifts with TM since it's almost 2020 and we have that technology.
So if thats the case HOLY POT MEET KETTLE, how does the guy who preaches TM saves transmissions going to go on and on about how a 3-4 shift will kill it......
If too much power can kill it, take your 700hp engine and choke it down to 250hp on the shifts with TM since it's almost 2020 and we have that technology.
This is the first time I've seen people say they build 4l60es to hold WOT in 4th. Is this for half mile racing? Most people kill their trans during the shift...hence TM helping. I believe Kfxguy is saying that it's not only the shift that'll kill it, it's that 4th won't hold while it's in gear. I don't build 4l60s just haven't broken one so you guys can battle about whether or not 4th can hold at WOT.
And here we've got someone else wanting to **** money away on another one.
Thats not what I do. If I have an 800 hp vehicle I'm building a 1000 hp transmission for it.
The TM fans must agree, if you've got a 600 hp transmission behind a 800hp engine, just choke it down with TM.
Makes no sense to me but whatever, it ain't my money and it won't be my car on the side of the road or in the middle of the track, or running ONLY 11's with 800 hp.
It's the application. He has a transmission thats barely holding on and he knows it so he's all defensive about it, and yet thinks he pulled off a miracle because it's living without the power "turned up"
And here we've got someone else wanting to **** money away on another one.
Thats not what I do. If I have an 800 hp vehicle I'm building a 1000 hp transmission for it.
The TM fans must agree, if you've got a 600 hp transmission behind a 800hp engine, just choke it down with TM.
Makes no sense to me but whatever, it ain't my money and it won't be my car on the side of the road or in the middle of the track, or running ONLY 11's with 800 hp.
And here we've got someone else wanting to **** money away on another one.
Thats not what I do. If I have an 800 hp vehicle I'm building a 1000 hp transmission for it.
The TM fans must agree, if you've got a 600 hp transmission behind a 800hp engine, just choke it down with TM.
Makes no sense to me but whatever, it ain't my money and it won't be my car on the side of the road or in the middle of the track, or running ONLY 11's with 800 hp.
It's the application. He has a transmission thats barely holding on and he knows it so he's all defensive about it, and yet thinks he pulled off a miracle because it's living without the power "turned up"
And here we've got someone else wanting to **** money away on another one.
Thats not what I do. If I have an 800 hp vehicle I'm building a 1000 hp transmission for it.
The TM fans must agree, if you've got a 600 hp transmission behind a 800hp engine, just choke it down with TM.
Makes no sense to me but whatever, it ain't my money and it won't be my car on the side of the road or in the middle of the track, or running ONLY 11's with 800 hp.
And here we've got someone else wanting to **** money away on another one.
Thats not what I do. If I have an 800 hp vehicle I'm building a 1000 hp transmission for it.
The TM fans must agree, if you've got a 600 hp transmission behind a 800hp engine, just choke it down with TM.
Makes no sense to me but whatever, it ain't my money and it won't be my car on the side of the road or in the middle of the track, or running ONLY 11's with 800 hp.
it’s been said before, but I guess. GM is stupid too, right? They do the same thing on all their vehicles. You think they might know something you don’t? O let me guess, you know better than GM too? I’d rather pull a couple degrees of timing than pull my trans out every 6 months anyway. Besides, when I went to the track, I disabled tm and it didn’t go any faster. I thought it was holding me back. But it wasn’t. So I’m not sure what you have going on up there in your hard *** head, but I can’t fix it for you. What about the hellcat and demon. You don’t think they have tq management? The demon is the fastest production car right now.....doesn’t seem to be hurting it. And look at the z06 vette. It’s got it too.
TECH Resident
Joined: May 2006
Posts: 969
Likes: 119
I have built many transmissions and customers using my kits that can make a WOT 3-4 shift and live when using the Sonnax 4th apply servo. And you can run a lot of Nitrous, "if" you use a window switch to shut the Nitrous off during the shifts. This is pretty much the same as using Torque Management. Once in gear the 3-4 clutches and or 2-4 band applied (they now are acting as a "static" clutch or band) can hold a lot more torque, as they are fully applied. It is always the shift that breaks or wears the clutches and band on the shifts. Torque management is one of the biggest reasons for the increased longevity of the 4L60E transmission.
I have built many transmissions and customers using my kits that can make a WOT 3-4 shift and live when using the Sonnax 4th apply servo. And you can run a lot of Nitrous, "if" you use a window switch to shut the Nitrous off during the shifts. This is pretty much the same as using Torque Management. Once in gear the 3-4 clutches and or 2-4 band applied (they now are acting as a "static" clutch or band) can hold a lot more torque, as they are fully applied. It is always the shift that breaks or wears the clutches and band on the shifts. Torque management is one of the biggest reasons for the increased longevity of the 4L60E transmission.
TECH Junkie
Joined: Dec 2012
Posts: 3,614
Likes: 1,326
From: Iowa
I tell customers not to do WOT pulls in OD because I use the sonnax HD2-3 shift valve...which applies the overruns in D3 shifter position and I think that's a benefit to help support the sprag when racing.
If they want to do 140mph+...go ahead and click it into overdrive what do I care. As long as the band can hold, everything else will be fine.
If they want to do 140mph+...go ahead and click it into overdrive what do I care. As long as the band can hold, everything else will be fine.
TECH Enthusiast
Joined: Apr 2009
Posts: 591
Likes: 235
From: Lewisville, TX
Sorry I forgot to mention that I was on a bone stock transmission at the time.
TECH Apprentice
Joined: Apr 2016
Posts: 313
Likes: 16
From: Lincoln, NE
Pretty sure this is the same advise you'd get from Performa and Finish Line Transmissions on the 4l65E. I have a 4l65e level 5 from Finish Line and talked to them after breaking a reverse sprag and on the rebuild was discussed to run in D because of reasons stated it applies the overruns takes pressure off the weak sprags but cruising and highway OD is good. Don't quote me exactly as I'm not any Transmission expert.
As others have said it's been shown that a lot of guys have run with success a 4l60e with lots of power, look at Performa, RPM, and Finish Line they have lots of fast guys running these transmissions. It can be done, but if it was my money on a heavy turbo build want OD 4l80e don't need OD Turbo400. Could you still burn up a 80e or a 400? Yeah if tune is shitty nothing will last very long.
And A) requires you installing a completely different transmission than what's in the car, B) lose overdrive, and C) requires a conversion or adapter to get speedo. A 4l60e isn't stronger than a TH400, it's just more convenient for some.
We can build the 700 to 4L79 specs.
NOW, how do we utilize torque management? How do we make the transmission live. Hmm, I bet you have nothing for that.