Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

th350 high power build

Thread Tools
 
Search this Thread
 
Old Aug 24, 2009 | 05:17 PM
  #1  
jrocstar's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Mar 2008
Posts: 172
Likes: 0
Default th350 high power build

well I am looking at what I should throw into my trans for a 6.0l t88 turbo build in my f body. looking for a 1000 wheel setup leaving off a trans brake. I Have a 4000 stall ati eliminator 11 series converter. I am thinking a 36 element sprag assembly with a hardened input shaft and drum will suffice. I already have red eagles and kolenes. What are the pro's opinions on this?
Reply
Old Aug 24, 2009 | 06:28 PM
  #2  
WE TODD DID's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2007
Posts: 1,627
Likes: 290
Default

Th400 if you insist on keeping the 3 speed.

With 1000 rwhp in a heavy f-body, that 350 will never take it.
Reply
Old Aug 24, 2009 | 06:42 PM
  #3  
jrocstar's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Mar 2008
Posts: 172
Likes: 0
Default

not heavy pretty much all tubular and gutted race weight pretty much only factory front seats and carpet everything else has been changed
Reply
Old Aug 25, 2009 | 05:42 PM
  #4  
FTICONVERTERS's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Aug 2007
Posts: 1,376
Likes: 96
From: Deland, FL
Default

If the car is under 3200 lbs save the aggravation of the 350 and its limitations and put a glide in it!!!
Greg
__________________
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet

Reply
Old Aug 25, 2009 | 09:04 PM
  #5  
jrocstar's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Mar 2008
Posts: 172
Likes: 0
Default

ha ha ha true that would be nice but I still wanna drive this thing street. glide is not so easy with this setup
Reply
Old Aug 25, 2009 | 09:30 PM
  #6  
jakeshoe's Avatar
TECH Resident
20 Year Member
Liked
Loved
iTrader: (14)
 
Joined: Sep 2005
Posts: 821
Likes: 114
From: North Texas
Default

The turbo combo should love the Glide at the track.

TH400 or 4L80E for street
Reply
Old Aug 26, 2009 | 06:19 AM
  #7  
FTICONVERTERS's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Aug 2007
Posts: 1,376
Likes: 96
From: Deland, FL
Default

well then go with 400 but definately not a 350.

Greg
__________________
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet

Reply
Old Aug 26, 2009 | 09:04 PM
  #8  
jrocstar's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Mar 2008
Posts: 172
Likes: 0
Default

okay so what should i put in the th400? probably basically the same mods that and with trans brake launch probably upgrade the band and servo
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 26, 2009 | 09:13 PM
  #9  
WE TODD DID's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2007
Posts: 1,627
Likes: 290
Default

Originally Posted by jrocstar
okay so what should i put in the th400? probably basically the same mods that and with trans brake launch probably upgrade the band and servo
Hardened input shaft, 34 element drum, trans brake, 4 intermediate frictions, dual feed 3rd, and good building techniques. The only band you'll have is the low/ rev band which generally comes with kevlar lining. There won't be a servo to upgrade.
Reply
Old Aug 26, 2009 | 09:14 PM
  #10  
Vortech Converters's Avatar
Restricted User
 
Joined: Feb 2008
Posts: 61
Likes: 0
From: Michigan
Default Anyone can build a PG or TH400!

Anyone that says a th350 can't take it, hasn't tried hard enough! I know it's not sexy enough to say I have a TH350.

36 element sprag for sure, and use the wave steel in the intermediate clutch pack << NO MATTER WHAT THE TRANS BRAKE INSTRUCTIONS SAY!

A re-hardened stocker input shaft and drum assy from CK perf has gone 8's for me for SEASON(S)>>> http://www.thirdgen.org/techboard/or...k-finally.html (try to guess what my screen name is)

Depending on the Brake (redneck,BTE,and TCI are carbon copies of one another). use 3 >> 1 7/8'' cap plugs in the intermediate servo area, don't just use the lame 1/8'' pipe plugs they give you. You have to drive the 3rd cap plug just under the area where the hole starts to neck down for the servo.
Reply
Old Aug 26, 2009 | 10:27 PM
  #11  
jakeshoe's Avatar
TECH Resident
20 Year Member
Liked
Loved
iTrader: (14)
 
Joined: Sep 2005
Posts: 821
Likes: 114
From: North Texas
Default

Mike,
I got the converter today. Thanks! It'll go in the car tomorrow.
I have to swap the cam, timing set, valve springs, timing cover, and oil pan tomorrow then set it back in place.

Mike,
You and I both have TH350's out there living under power, but there is a point in time (~600-700 HP) where the TH400 is just the unit of choice due to long term reliability.

1000 HP is definitely TH400 territory IMO.
Reply
Old Aug 26, 2009 | 11:22 PM
  #12  
Vortech Converters's Avatar
Restricted User
 
Joined: Feb 2008
Posts: 61
Likes: 0
From: Michigan
Default True, BUT!

Originally Posted by jakeshoe
Mike,
I got the converter today. Thanks! It'll go in the car tomorrow.
I have to swap the cam, timing set, valve springs, timing cover, and oil pan tomorrow then set it back in place.

Mike,
You and I both have TH350's out there living under power, but there is a point in time (~600-700 HP) where the TH400 is just the unit of choice due to long term reliability.

1000 HP is definitely TH400 territory IMO.

I think with all these crazy turbo combo's that everyone seems to be putting together that a th350C (here we go again) would be killer, especially with a multi-disc lock-up set up.

True, th400 is king as far as all out durability goes, but they're boring. I like to see people's faces cringe when you tell them your running a th350 or even a 200-4r or worse yet the ol' 200 metric.

I'll call you in the afternoon.
Reply
Old Aug 27, 2009 | 12:48 AM
  #13  
jakeshoe's Avatar
TECH Resident
20 Year Member
Liked
Loved
iTrader: (14)
 
Joined: Sep 2005
Posts: 821
Likes: 114
From: North Texas
Default

A TH350C could work good with a good converter locking up in 3rd.

How's the PG lockup thing going?

I've got to go pick up the 4L80E auto brake valves tomorrow and test one soon. I'm buried here.

I think I mentioned the 200 setup for the Stock Eliminator car in the past. Maybe a 200C for that combo with a lockup converter to pick it up. I'll ask the owner if he wants to test it.
Reply
Old Aug 27, 2009 | 07:42 AM
  #14  
Vortech Converters's Avatar
Restricted User
 
Joined: Feb 2008
Posts: 61
Likes: 0
From: Michigan
Default 98% done with the l/u PG

Originally Posted by jakeshoe
A TH350C could work good with a good converter locking up in 3rd.

How's the PG lockup thing going?

I've got to go pick up the 4L80E auto brake valves tomorrow and test one soon. I'm buried here.

I think I mentioned the 200 setup for the Stock Eliminator car in the past. Maybe a 200C for that combo with a lockup converter to pick it up. I'll ask the owner if he wants to test it.
The L/U PG is 98% finished. I'll be testing it mid september behind a wicked 106mm turbo car. It should be stupid on the last 1/8 for mph.

Have a brake for the hd-3 kit?

I'll call you this afternoon about the 200.

jrocstar sorry about jacking your thread.
Reply
Old Aug 27, 2009 | 07:43 AM
  #15  
jrocstar's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Mar 2008
Posts: 172
Likes: 0
Default

I honestly think I can make the 350 hold. Maybe the launch off trans brake and two step will be rough. Maybe I should leave that for when i have a lenco.
Reply
Old Aug 27, 2009 | 10:45 AM
  #16  
FTICONVERTERS's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Aug 2007
Posts: 1,376
Likes: 96
From: Deland, FL
Default

If you are looking for a glide lock up they have been done for many years. I originaly made one 19 years ago and several other have made them as well. I also made a lock up 400.Even with a bolt together converter to handle 2500 horsepower. this unit was called the super brute.

Greg
__________________
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet

Reply




All times are GMT -5. The time now is 08:16 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE