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

TH400 swap, what stall?

Thread Tools
 
Search this Thread
 
Old Feb 23, 2010 | 10:07 AM
  #1  
01sscam's Avatar
Thread Starter
Man-Crush Warning
 
Joined: Oct 2006
Posts: 755
Likes: 2
From: abq,nm
Default TH400 swap, what stall?

I'm in the process swapping out my 6 speed and installing a rossler th400. I'm trying to figure out what stall I will need. The car is used 90% at the drag strip, I drive it to and from the track and once in a while on the weekends. The car weighs 3,000 lbs with me in it. The last time I dynoed the car, it made 485rwhp/421rwtq, that was with the 6 speed. Since then I have installed a moser 9" with 4.10 gears, and an HSW wet kit which I'll be spraying a 100 shot. The camshaft is a MS4 239/242, .649"/.609" 111LSA. The rev limiter is set at 6,800. With the 6 speed, I was coming out of the hole at 6,700 rpm. I assume on the nitrous and with the auto I will be leaving a bit lower than that. Any suggestions would be greatly appreciated. Thanks in advance.
Reply
Old Feb 23, 2010 | 03:50 PM
  #2  
sleeperstyle's Avatar
10 Second Club
iTrader: (4)
 
Joined: Jul 2004
Posts: 1,284
Likes: 0
From: hatboro, pa
Default

get one custom built for your setup. i feel you have less breathing room with the th400, with the long 1st gear. you gotta get it right on the money.

if i had to guess you might be able to pull off a 4000 with a 28" tire on spray, be close with those gears.

im running a yank 3800, 3.42 gear, 26" tire, 150whp shot, crosses the line around 6500rpm 130mph. dead on the money for my setup- ms3 cam only
Reply
Old Feb 23, 2010 | 04:06 PM
  #3  
01sscam's Avatar
Thread Starter
Man-Crush Warning
 
Joined: Oct 2006
Posts: 755
Likes: 2
From: abq,nm
Default

FTI recommended a 4400 stall, ordered it earlier today.
Reply
Old Feb 23, 2010 | 05:38 PM
  #4  
GregWS6&z28's Avatar
10 Second Club
iTrader: (8)
 
Joined: Apr 2004
Posts: 2,247
Likes: 0
From: Portsmouth, VA
Default

another vote for Greg at FTI. he will walk through everything with building the right one for you and get you exactly what your car needs. He recommended me a 4600 but I went with about a 4200. It's going in soon.
Reply
Old Feb 26, 2010 | 06:52 PM
  #5  
Zero4488's Avatar
Restricted User
iTrader: (10)
 
Joined: Feb 2007
Posts: 1,455
Likes: 0
From: Jersey
Default

Originally Posted by 01sscam
FTI recommended a 4400 stall, ordered it earlier today.
Same stall that's in my car and it's great....FTI would definitely be the right choice....
Reply
Old Mar 1, 2010 | 10:28 AM
  #6  
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

01 sscam Let me know how it turns out. We are able to build converters that will stall and hve exceptional efficiency. this is part of the reason that our cars run the way we do.

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 Mar 1, 2010 | 01:52 PM
  #7  
01sscam's Avatar
Thread Starter
Man-Crush Warning
 
Joined: Oct 2006
Posts: 755
Likes: 2
From: abq,nm
Default

Originally Posted by FTICONVERTERS
01 sscam Let me know how it turns out. We are able to build converters that will stall and hve exceptional efficiency. this is part of the reason that our cars run the way we do.

Greg
I'll let you know, thanks for the great service by the way.
Reply
Old Mar 4, 2010 | 04:27 PM
  #8  
01sscam's Avatar
Thread Starter
Man-Crush Warning
 
Joined: Oct 2006
Posts: 755
Likes: 2
From: abq,nm
Default

Big thanks to FTI, converter and flexplate got here a earlier this week!

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




All times are GMT -5. The time now is 03:19 PM.

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