Need bullit-proof A4 which one
Staging Lane
Joined: Jun 2002
Posts: 80
Likes: 0
From: Pearland, TX
I'm also interested in this question. I just recently lost overdrive in my car and will be needing a new tranny very soon. I plan on spraying (forged internals) so just replacing a stock 4L60E is out of the question, but this car is still a daily driver.
I would lean towards the 4L80. You retain full electronic control of the transmission by the PCM if desidered. OEM units seem to hold over 500hp with no problems. You'll have all the benefits of the th400, aftermarket parts ect, with overdrive and lockup converter. This brings up a good question. Can you change the 1-3 gear ratio like you can in a th400?
Originally Posted by SmokingWS6
I would lean towards the 4L80. You retain full electronic control of the transmission by the PCM if desidered. OEM units seem to hold over 500hp with no problems. You'll have all the benefits of the th400, aftermarket parts ect, with overdrive and lockup converter. This brings up a good question. Can you change the 1-3 gear ratio like you can in a th400?
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by git_sum
Will a 4L60E converter bolt up to the 4L80E?
If you must have overdrive I would go with a TH400 and a GearVendors Over Drive. That will give you the bullet proof tranny your looking for and thats also what I plan on doing
Originally Posted by 2MuchRiceMakesMeSick
Good question... I doubt the splines are the same but someone will chime in for sure.
If you must have overdrive I would go with a TH400 and a GearVendors Over Drive. That will give you the bullet proof tranny your looking for and thats also what I plan on doing
If you must have overdrive I would go with a TH400 and a GearVendors Over Drive. That will give you the bullet proof tranny your looking for and thats also what I plan on doing
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Teching In
Joined: May 2004
Posts: 13
Likes: 0
Hi guys,
yes the 4L80e uses all the standard t400 internals. the gears for 3rd can be changed. I have one with the transgo shift kit, waves removed, extra clutches put in, tightened tolerances throughout.
You will need a drive plate and converter to suit the 4L80 to the LS1. You will need to have hp tuners flash the pcm to operate the trans as the solenoid order is not the same, and you will need to change 2 of the pins in the plug for it to all work.
it wieghs 90lbs more than a 4l60, due to its very robust internals. It is the same legth as the 4l60, however crossmeber needs to be made. easy as.
A t400 yoke needs to be used and grafted onto the drive shaft.
overal size through the guts and pan of the tranny iss bigger than the 4l60, but bellhousing size is the same.
Not easy but the best. Drive the car all controlled by the factory pcm, and a package suited to 1000hp +, depending on what internal mods you go for.
Hope this helps
yes the 4L80e uses all the standard t400 internals. the gears for 3rd can be changed. I have one with the transgo shift kit, waves removed, extra clutches put in, tightened tolerances throughout.
You will need a drive plate and converter to suit the 4L80 to the LS1. You will need to have hp tuners flash the pcm to operate the trans as the solenoid order is not the same, and you will need to change 2 of the pins in the plug for it to all work.
it wieghs 90lbs more than a 4l60, due to its very robust internals. It is the same legth as the 4l60, however crossmeber needs to be made. easy as.
A t400 yoke needs to be used and grafted onto the drive shaft.
overal size through the guts and pan of the tranny iss bigger than the 4l60, but bellhousing size is the same.
Not easy but the best. Drive the car all controlled by the factory pcm, and a package suited to 1000hp +, depending on what internal mods you go for.
Hope this helps
Parish has a 4l80e with shift kit and stall. He's run in the 10s. 4500lbs plus, 4 wheel drive launches. Has a turbo and sprays. Basically, he beats the hell out of his truck and never had a problem with the 4l80e.
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by BlownCV8
Hi guys,
yes the 4L80e uses all the standard t400 internals. the gears for 3rd can be changed. I have one with the transgo shift kit, waves removed, extra clutches put in, tightened tolerances throughout.
You will need a drive plate and converter to suit the 4L80 to the LS1. You will need to have hp tuners flash the pcm to operate the trans as the solenoid order is not the same, and you will need to change 2 of the pins in the plug for it to all work.
it wieghs 90lbs more than a 4l60, due to its very robust internals. It is the same legth as the 4l60, however crossmeber needs to be made. easy as.
A t400 yoke needs to be used and grafted onto the drive shaft.
overal size through the guts and pan of the tranny iss bigger than the 4l60, but bellhousing size is the same.
Not easy but the best. Drive the car all controlled by the factory pcm, and a package suited to 1000hp +, depending on what internal mods you go for.
Hope this helps
yes the 4L80e uses all the standard t400 internals. the gears for 3rd can be changed. I have one with the transgo shift kit, waves removed, extra clutches put in, tightened tolerances throughout.
You will need a drive plate and converter to suit the 4L80 to the LS1. You will need to have hp tuners flash the pcm to operate the trans as the solenoid order is not the same, and you will need to change 2 of the pins in the plug for it to all work.
it wieghs 90lbs more than a 4l60, due to its very robust internals. It is the same legth as the 4l60, however crossmeber needs to be made. easy as.
A t400 yoke needs to be used and grafted onto the drive shaft.
overal size through the guts and pan of the tranny iss bigger than the 4l60, but bellhousing size is the same.
Not easy but the best. Drive the car all controlled by the factory pcm, and a package suited to 1000hp +, depending on what internal mods you go for.
Hope this helps
This is great and all buutttt how come i never see anyone with 1000+ hp using them? They ALWAYS use Th400s
Most 1khp cars are purpose built for the track, not a street strip car. The point is the 80 can handle that much. Still a toss up. I think for most people a good prepped trans from FLP, Cmotor or comparable would suffice. I know my torque at launch is well over 550lbs when spraying out of the hole with a 200shot so I know Cmotor built it right. And without a trans brake, I doubt a D1SC is going to leave at/near his peak torque like a Nitrous engine does, IMHO.
Teching In
Joined: May 2004
Posts: 13
Likes: 0
Originally Posted by 2MuchRiceMakesMeSick
This is great and all buutttt how come i never see anyone with 1000+ hp using them? They ALWAYS use Th400s
But for a very strong reliable 4 speed alternative to the **** week 4l60.....it is the go hands down!!
575 rwhp allowing a 30% drivetrain loss through this box gives me about 750hp at the crank......with 600ftp of torque at the treads at 4000 rpm.......is testimate that they are good. IMHO......
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by CAT3
Most 1khp cars are purpose built for the track, not a street strip car. The point is the 80 can handle that much. Still a toss up. I think for most people a good prepped trans from FLP, Cmotor or comparable would suffice. I know my torque at launch is well over 550lbs when spraying out of the hole with a 200shot so I know Cmotor built it right. And without a trans brake, I doubt a D1SC is going to leave at/near his peak torque like a Nitrous engine does, IMHO.
This is a bit of topic but i just noticed........
Man is that a
on your license plate??? 
Staging Lane
Joined: Oct 2004
Posts: 81
Likes: 0
From: Highland Park, IL.
Originally Posted by 2MuchRiceMakesMeSick
This is great and all buutttt how come i never see anyone with 1000+ hp using them? They ALWAYS use Th400s
-Steve
Originally Posted by 2MuchRiceMakesMeSick
This is a bit of topic but i just noticed........
Man is that a
on your license plate???Well, I didnt want to insult your intelligence, sorry.
You dont see alot of the 1000hp cars on the street right? And why would you want to use a heavier trans (80 to 400) for a race purpose car. The additional weight and silightly bigger casing will keep the TH400 at the track more than street use, and opposite for the 80s, more street less track. Does that make more IT sense?
Yes, that is a rainbow on my cars plate, it happens to be Hawaii the rainbow state. WTFE!
On The Tree
Joined: Jul 2002
Posts: 179
Likes: 0
From: Texas
I was under the impression that the tranny tunnel needed to be modified to fit the bigger tranny. Have you thought about a built 200r. They are a little pricey but everyone i talked to loves them. When this 4l60e goes I am going to go with a built 200R 4 
Last edited by Evo98z; Nov 11, 2004 at 11:14 PM.
TECH Senior Member
Joined: Apr 2004
Posts: 6,157
Likes: 1
From: Texas
Originally Posted by Evo98z
I was under the impression that the tranny tunnel needed to be modified to fit the bigger tranny. Have you thought about a built 200r. They are a little pricey but everyone i talked to loves them. When this 4l60e goes I am going to go with a built 200R 4
They are a great option but really $$$$ from what I have seen
Originally Posted by CAT3
Well, I didnt want to insult your intelligence, sorry.
You dont see alot of the 1000hp cars on the street right? And why would you want to use a heavier trans (80 to 400) for a race purpose car. The additional weight and silightly bigger casing will keep the TH400 at the track more than street use, and opposite for the 80s, more street less track. Does that make more IT sense?
Yes, that is a rainbow on my cars plate, it happens to be Hawaii the rainbow state. WTFE!
You dont see alot of the 1000hp cars on the street right? And why would you want to use a heavier trans (80 to 400) for a race purpose car. The additional weight and silightly bigger casing will keep the TH400 at the track more than street use, and opposite for the 80s, more street less track. Does that make more IT sense?
Yes, that is a rainbow on my cars plate, it happens to be Hawaii the rainbow state. WTFE!
You didnt insult my intelligence, I was just simply asking a question. Is that a rainbow on your plates? I did not know that hawaii uses rainbows for their logo.