Liberty has a transmission that'll hold anything you can throw at it and more. Mike Moran ran 5.97 with a Liberty equalizer. Liberty or Jerico have just what you need when you are ready to get serious about putting all that torque to the track.
Good luck, Tom
that doesn't sound like a street car setup lol
Quote:
Originally Posted by Nitrus rush
With all the money you spent on t56 transmissions/clutches you could have had a killer 4L80E setup. This point has been beaten to death on numerous occasions, but I'll restate the obvious. . . 4L80E all the way!
exactly! I follow those threads, but I just hoped this tranny would last. It is the first one I have broken on the street, all the others were on the track. I was hoping if I kept it off the track the tranny would be ok, fail.
Quote:
Originally Posted by engineermike
Interesting thread because I'm wanting to go the other direction.
I'm running a billet-sprag TH350 that's been flawless behind ~930 fwhp. However, I'm bored with the car and want to swap to a T56. Wonder if we could arrange a trade...
lol, if you aren't gonna make any more power, I think you will be fine.
I will fix and keep the t56 though, I have another car that is more mild that I will install it in.
__________________ 94 Firebird V6 - H/C LS1 Swap
99 Trans Am - 427ci - Twin 76s - Jan 09 GMHTP
04 Viper - Paxton/Corsa/HRE/Slam
Tiago, So sorry to hear about the latest drivetrain fatality
___ If you get the Auto, I can't wait to hear about the performance! I bet it's going to fly!
I hope so!
__________________ 94 Firebird V6 - H/C LS1 Swap
99 Trans Am - 427ci - Twin 76s - Jan 09 GMHTP
04 Viper - Paxton/Corsa/HRE/Slam
I thought I remembered Harlan (y2khawk) posting about his T56 case actually flexing back in the day. I know he posted in depth on the issue but it must have been on LS1.com because it took me forever to find this tidbit on here.
I love both Stalled autos, and manuals, and i have owned both. I have to say for ease of Launching and drivability, Get a stalled 80E and call it a day. My turbo car (85 Monte SS with a 5.3 and turbo) will definitely be an auto with a stall when its finished. whereas, the firehawk will stay a 6 speed, even with a new NA motor in it. If nothing else, give the auto a go and swap back if you dont like it
__________________ Eric
2002 Firehawk M6 #0490. LS1tech Stock. Tuned @ CMS
LS1Tech Reverse split Crew member #01
The dog ring doug nash/g-force/liberty unit is not very nice to drive on the street..., but oh so sweet on the drag strip...
Quote:
Originally Posted by Torkman15
Liberty has a transmission that'll hold anything you can throw at it and more. Mike Moran ran 5.97 with a Liberty equalizer. Liberty or Jerico have just what you need when you are ready to get serious about putting all that torque to the track.
4l80e is the best option for you! not sure how long the th350 would hold at 1000+hp. your car is way to heavy (imho) for a glide! th400 would be awesome but dont have OD! so if you got the cash and dont mind extra weight the 80e is the ONLY option! if not the 80e the th400 would be the next logical decision!
i had a 6 speed and now have a 4L80E Do it and dont look back, if you look around you can do it pretty cheap, I traded my built 6 speed and all swap parts to another user on here for all the swap parts for the 80E + the transmission, It is supposed to be a Rostler but I never checked, I just ran it and it has held up great for 10,000+ miles and 30+ dragstrip passes, now I am not making near the power you but I aim to change that soon.
Because of cost, I dont ussually go the 480e route. Zombiess runs 2.75 gears and a 28 tire with a rossler 400. While I wouldnt drive it cross country unless I had too, I ve driven it 50 miles on the hiway. In one of my cars I have 3.25's but a 315/60....and th400.
In the turbo van I did a rossler 4l80e.....and its perfect. While its not a 1000 hp...it probably is 600 at 6600 lbs or more most of the time, and IS a 100% daily driver , family wagon, and cross country cruiser.
You have the power to gear it higher....Id go 2.73's or so....and a th400. I run 2.73s in my wifes 98 turbo ss and its nice enough for her to drive to work on the freeway in the fast lane with a short tire.
I pulled the trans out today, the input shaft feels like there is nothing attached to it, it spins freely lol. I guess I'll get LMR to quote fixing this shit so I can use it on my 94.
__________________ 94 Firebird V6 - H/C LS1 Swap
99 Trans Am - 427ci - Twin 76s - Jan 09 GMHTP
04 Viper - Paxton/Corsa/HRE/Slam
time for a transzilla.. or th4oo or 4L80e
i have a 2.72 gear with a th400 and a 325/50/15 mt dr shifts outs of 1st @ 6500 about 81mph and 130mph out of 2 its kinda like a power glide.. with a od i did this set up cause it was free... I am building my 4l80e now
__________________ 02 Z28 A4 race weight 3500
bolt on boost pt70 ams-500 10.85 @125.86 Slowhawk tuned]
winter project-tranny,9in. and suspension
Tiago. Will the GVO make the 400 a 6 speed? i know they are out here in SD but i have never stopped by. Also, does it effect the durability at all? ( I.E. a Trans can handle 800~ to the wheels, would the GVO then become the weak point?) looks like a good choice man!
__________________ Eric
2002 Firehawk M6 #0490. LS1tech Stock. Tuned @ CMS
LS1Tech Reverse split Crew member #01
Tiago. Will the GVO make the 400 a 6 speed? i know they are out here in SD but i have never stopped by. Also, does it effect the durability at all? ( I.E. a Trans can handle 800~ to the wheels, would the GVO then become the weak point?) looks like a good choice man!
yes it makes it a 6 speed, and they are rated at 1200 hp normally, they can beef them up to 2000 hp if asked.
__________________ 94 Firebird V6 - H/C LS1 Swap
99 Trans Am - 427ci - Twin 76s - Jan 09 GMHTP
04 Viper - Paxton/Corsa/HRE/Slam
I wonder if there is something flexed/twisted with your case..... causing something to have tolerance issues.
I beat the crap out of my stock internal t56 with 650rwhp..... launched it at 5500rpm lifting the tires, 1.6 60', 3800+lbs, and it ate it all.
The hydraulics on the other hand..... the hydraulics didnt like launching like that... 2nd gear took forever to engage... resulting in only a low 11 at 128mph.
Im about 2hrs away from finishing my 4L80E swap.... cant wait. I suggest a FLT 4L80E or a Rosler TH400.
__________________ ----------|02 35th Ann. Limited Edition SS A4 T-top.|-----------
-----------------------620rwhp/548rwtq.-----------------------
-------------Tuned by Rick @ Synergy Motorsports-------------- |Procharger D1SC|FMIC|Circle D 4C|Custom Cam|6.0L Heads|Moser 9"|FLT 4L80E|
I pulled the trans out today, the input shaft feels like there is nothing attached to it, it spins freely lol. I guess I'll get LMR to quote fixing this shit so I can use it on my 94.
Thats a helluva idea.... TH400 and GVO.
__________________ ----------|02 35th Ann. Limited Edition SS A4 T-top.|-----------
-----------------------620rwhp/548rwtq.-----------------------
-------------Tuned by Rick @ Synergy Motorsports-------------- |Procharger D1SC|FMIC|Circle D 4C|Custom Cam|6.0L Heads|Moser 9"|FLT 4L80E|
I bet if you would have sent your first T56 to sixspeedsinc, you would have never had a problem. Just thinking that because theres hit 8's and pulled like a 1.3 60' and holds up.
__________________ 2000 White Pontiac TransAm M6 - LME Forged 370 | APS Twins | FAST 90/90 | Prostars/MTdr's 275/60/15 | McLeod Twin disk | Under Construction...
