how fast can a stock ls1 tranny go

**NavdeepWS6** · 12-07-2008, 10:35 PM

Well i was wondering how fast can our stock tranny's really go up to with 3.42 rear gears if we had no governor on it and engine was capable with say a 800hp or more
6 speed tranny just to let ya know
180
190
200+

**JoshieDoom** · 12-07-2008, 10:53 PM

It would fry at 400 HP.

**LS1Powerhouse** · 12-07-2008, 11:34 PM

Originally Posted by JoshieDoom

It would fry at 400 HP.

KFC style.

**JoshieDoom** · 12-07-2008, 11:41 PM

Mine fried with about 315

Lets say you go all out... get a built level 3 4l60e. Might hold that much.. but if you have 800 hp you have the money to do a built 4l80e conversion.

and that is where the fun is at.

**tonyjnjz** · 12-08-2008, 12:09 AM

Originally Posted by NavdeepWS6

Well i was wondering how fast can our stock tranny's really go up to with 3.42 rear gears if we had no governor on it and engine was capable with say a 800hp or more

180
190
200+

if your redline is raised like mine ( 6700) 190ish at redline in 5th.........in 6th its like 280 and ud need a few thousand hp

**JoshieDoom** · 12-08-2008, 01:02 AM

Anyone that is running that much HP(over 400 IMO) is running on borrowed time.

**tonyjnjz** · 12-08-2008, 01:08 AM

Originally Posted by JoshieDoom

Anyone that is running that much HP(over 400 IMO) is running on borrowed time.

the t-56 is made to handle much more than 400hp boys and the rear is only a problem when u beat on it........simply going fast isnt beating on it

**JoshieDoom** · 12-08-2008, 01:17 AM

Originally Posted by tonyjnjz

the t-56 is made to handle much more than 400hp boys and the rear is only a problem when u beat on it........simply going fast isnt beating on it

Pretty sure it isnt MADE to handle but it can handle. I have seen in person 10 second 10 bolt cars. Same thing.

Get a good rebuild with quality parts and dont ever worry again.

**tonyjnjz** · 12-08-2008, 01:22 AM

Originally Posted by JoshieDoom

Pretty sure it isnt MADE to handle but it can handle. I have seen in person 10 second 10 bolt cars. Same thing.

Get a good rebuild with quality parts and dont ever worry again.

what does 10 second cars have to do with top speed? NOTHING

**JoshieDoom** · 12-08-2008, 01:28 AM

First off, to pull in those upper gears requires horsepower. HP=More stress on the driveline. I was commenting on how the 10 bolts can hold a lot of HP and not break while some break on stock power.

Upper gears in a STOCK tranny arent meant to handle that much HP.

5th gear alone tops out at 181 MPH but I dont think any stock tranny has scene that.

6th at 268 mph.

kinda obvious.

**tonyjnjz** · 12-08-2008, 01:49 AM

Originally Posted by JoshieDoom

First off, to pull in those upper gears requires horsepower. HP=More stress on the driveline. I was commenting on how the 10 bolts can hold a lot of HP and not break while some break on stock power.

Upper gears in a STOCK tranny arent meant to handle that much HP.

5th gear alone tops out at 181 MPH but I dont think any stock tranny has scene that.

6th at 268 mph.

kinda obvious.

the c5 has the same tranny ( diff rear) and goes over 180.....next

**JoshieDoom** · 12-08-2008, 02:07 AM

Last time I checked the original poster has an 02 trans am. Totally different setup, I dont see any torque tube under my trans am. As well as no 10 bolt with a 3.42 gear setup on a c5...

Do some research on the internals of a t-56 that was used on the F-BODIES.

LS1 Performance Information > Vehicle Specific > Firebird / WS6

**Mr. Luos** · 12-08-2008, 08:26 AM

www.f-body.org/gears

**tonyjnjz** · 12-08-2008, 10:50 AM

Originally Posted by Mr. Luos

www.f-body.org/gears

my luos!!!! is your t-56 built with your emense hp in slowass???? has it self destructed yet and blew up at high speed?

**Mr. Luos** · 12-08-2008, 11:33 AM

Originally Posted by tonyjnjz

my luos!!!! is your t-56 built with your emense hp in slowass???? has it self destructed yet and blew up at high speed?

Stock 1999 T56.
Still in one piece....although I do figure it is on borrowed time.

And I don't do high speeds. 5th and 6th gear are not meant for WOT runs.

**NavdeepWS6** · 12-08-2008, 12:54 PM

well i was just wondering how fast can i really go with a stock t-56 and where can i get a rebuild and i mean a badass rebuild with good stuff or just get a new -t56 or will a 2007 z06 tranny work with an ls1

**JoshieDoom** · 12-08-2008, 09:01 PM

Originally Posted by Mr. Luos

Stock 1999 T56.
Still in one piece....although I do figure it is on borrowed time.

And I don't do high speeds. 5th and 6th gear are not meant for WOT runs.

See. I have read all over ls1.com/ls1tech lsall.com ls2.com, im 20 and i dont have kids. Readings is all i do

and i listen w00t

**racer426** · 12-08-2008, 09:08 PM

get a 14 bolt rear with 4l80e .509cu bbc truck wha bah!!!!

**tonyjnjz** · 12-08-2008, 10:07 PM

Originally Posted by JoshieDoom

See. I have read all over ls1.com/ls1tech lsall.com ls2.com, im 20 and i dont have kids. Readings is all i do

and i listen w00t

he also runs it down the track with well over 500 rwhp .....the t56 is ment to take a pretty good beating

**JoshieDoom** · 12-08-2008, 10:45 PM

Originally Posted by NavdeepWS6

Well i was wondering how fast can our stock tranny's really go up to with 3.42 rear gears if we had no governor on it and engine was capable with say a 800hp or more
6 speed tranny just to let ya know
180
190
200+

yep