switching from m6 to auto. th350 or th400?
11-08-2005, 02:08 PM
#1
TECH Fanatic
Thread Starter
iTrader: (16)
Join Date: Oct 2003
Location: Ruffin,N.C.
Posts: 1,456
Likes: 0
Received 0 Likes
on
0 Posts
switching from m6 to auto. th350 or th400? Hey guys, well im tired of the crappy clutches in our cars so im going auto. I will be adding a 150 shot of giggle juice on top of what ive got now so i need one that will hold up. should i go with the 350 or the 400 and why? I have 4.11's in my car now so what will be the best stall for that combo? I will switch back to 3.73's if i have to. If anyone has the upper part of the a4 console i will be needing one,thanks. Charles 
11-08-2005, 02:32 PM
#3
TECH Enthusiast
Join Date: Jan 2004
Location: Chattanoga TN
Posts: 574
Likes: 0
Received 0 Likes
on
0 Posts
you will most likely run out of rpm's in the 1/4 if you run a 3 speed with a 4.11 gear. I have a th350 and i get close to 5000 in 3rd in the 1/8 with a 3.73 rear.
11-08-2005, 03:53 PM
#4
LS1TECH Sponsor
iTrader: (33)
Join Date: Jul 2002
Location: Out on the farm in Central IL
Posts: 4,399
Likes: 0
Received 0 Likes
on
0 Posts
I just did this swap. Gotta tell you I love it. I used the M5 console and put a Cheetah shifter in there. It fits well. I have a built TH350 RMVB with T Brake and a 4600 stall converter. I also have a 4.10 gear. Last time out I was crossint the traps over 1200 at 6100 rpm. I am shifting at 6800.
Search in this forum and there are pictures of the shifter and info on the guy who did my trans. Jay Billingsly sent me to him.
Search in this forum and there are pictures of the shifter and info on the guy who did my trans. Jay Billingsly sent me to him.
11-09-2005, 03:49 AM
#6
TECH Fanatic
Thread Starter
iTrader: (16)
Join Date: Oct 2003
Location: Ruffin,N.C.
Posts: 1,456
Likes: 0
Received 0 Likes
on
0 Posts
thanks guys, i will be looking into this for awhile. this will be my winter project. i wish the 4l60e would hold up to that much power but i doubt it will.
11-09-2005, 06:25 AM
#7
11 Second Club
Originally Posted by silverbeast
thanks guys, i will be looking into this for awhile. this will be my winter project. i wish the 4l60e would hold up to that much power but i doubt it will.
I also vote TH400 with 4000 Nitrous stall. And if you have the extra cash, the TH400 has a GV overdrive unit you can buy for $2500 if you absolutely have to have OD.
Good luck with the new project and welcome to the dark side of the force
Trending Topics
11-18-2005, 09:07 AM
#13
Originally Posted by darrensls1
4L60e definately wouldn't last
I also vote TH400 with 4000 Nitrous stall. And if you have the extra cash, the TH400 has a GV overdrive unit you can buy for $2500 if you absolutely have to have OD.
Good luck with the new project and welcome to the dark side of the force
I also vote TH400 with 4000 Nitrous stall. And if you have the extra cash, the TH400 has a GV overdrive unit you can buy for $2500 if you absolutely have to have OD.
Good luck with the new project and welcome to the dark side of the force
quick question about the GV OD for the TH400, like how dose that work, can you rachet shift that hoe? thanks for the help. i'm still tryin to learn as much as i can about the GV...since i've only just recently heard about it.
11-18-2005, 09:41 AM
#14
Restricted User
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
WTF is the deal with ppl and 400 having a bigger advantage over the 350 because of "those gears" crap? They both run a 1:1 3rd gear so the rpm will be same no matter what. If you want to run bigger gears, get bigger tires to reduce the rpm but gain starting line traction, duh! The 350 will more than hold WTF you plan on throwing at it. 350 is lighter. You can add a GVOD to a 350 as well.
FWIW, I did my conversion A4 to A3 (TH350) same time as Steve, I am using an 8" ATI TC, suitable for nitrous (nice option since this bitch will be seeing the top side of a 250-300 shot soon enough). Rossler TH350 Terminator II, T-Brake, RMVB, B&M Pro Ratchet shifter, ATI Flexplate and TC, BMR XMember. Nice little setup that saves in the neighborhood of 50lbs, guesstimate, but there is a substantial difference.
GVOD is operated off a footswitch, just like the old dimmer switches mounted on the left side of the floor board. Ratchet shift, push switch, repeat!
FWIW, I did my conversion A4 to A3 (TH350) same time as Steve, I am using an 8" ATI TC, suitable for nitrous (nice option since this bitch will be seeing the top side of a 250-300 shot soon enough). Rossler TH350 Terminator II, T-Brake, RMVB, B&M Pro Ratchet shifter, ATI Flexplate and TC, BMR XMember. Nice little setup that saves in the neighborhood of 50lbs, guesstimate, but there is a substantial difference.
GVOD is operated off a footswitch, just like the old dimmer switches mounted on the left side of the floor board. Ratchet shift, push switch, repeat!
11-18-2005, 01:31 PM
#15
depends on what you want/need. t350 first gear is steeper than t400. My car weighs about the same...MAYBE less with the th400 than it did with the 4l60e...dunno why. t-350 is supposed to be more efficient.....and a cheaper swap not counting the cost of the tranny.
11-18-2005, 02:10 PM
#16
Banned
iTrader: (19)
Join Date: Jun 2005
Location: chitown
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
i have a rvmb TH400. i love it... i have a 12 bolt w/ 4.10 gears and 28" tires. i max out cruising speed aruond 67-68mph at 3,500 rpm. i have an unlocked converter in a 3,500+ lb car. if you want to stick w/ 26" tires, then go with a 3.73. but if the tires aren't an issue, keep the 4.10s and just go w/ taller tires. if the car isn't making crazy horsepower, i would definately go with the TH350. i got such a good deal on my TH400 i couldn't pass it up. but i would rather have a built TH350.
11-18-2005, 02:10 PM
#17
Banned
iTrader: (19)
Join Date: Jun 2005
Location: chitown
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
oh - and KEEP YOUR M6 CONSOLE!!! if you're getting a pro-ratchet shifter (that's what i have), or a hurst quarter stick, or b&m pro-stick. the look bad *** with the 6spd console and leather boot!
11-18-2005, 03:13 PM
#18
LS1TECH Sponsor
iTrader: (33)
Join Date: Jul 2002
Location: Out on the farm in Central IL
Posts: 4,399
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by imslow
oh - and KEEP YOUR M6 CONSOLE!!! if you're getting a pro-ratchet shifter (that's what i have), or a hurst quarter stick, or b&m pro-stick. the look bad *** with the 6spd console and leather boot!
Well said. I have a Cheetah shifter in the M6 console.