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

VSS Changes for the M6 to TH400?

Thread Tools
 
Search this Thread
 
Old May 24, 2007 | 09:47 AM
  #1  
Johnny5's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Nov 2001
Posts: 583
Likes: 0
From: NY
Default VSS Changes for the M6 to TH400?

I did some digging around through the search and most say to just get the correct part number. That isn't an option now since the tranny is in an done. I guess my issue was the reluctor ring is now a 40 teeth vs. the original which was 16 teeth or visa-versa. Apparently the speedo things your doing 130 when you are really doing like 45-50.

I have LS1 Edit and looked into the tables. It looks like there is a VSS pulse number in the tables that is currently set to 4000.

If you just divinde out the teeth count 40 / 16 it comes out to 2.5 times larger. Can I just multiply that Pulse count 4000 * 2.5 so the speedo reads the correct mph?

If my math is correct and that method is correct my value would now need to be at 10,000 pulses.

(mods, wasn't sure if this was a PCM topic or a Tranny topic or both)

Can someone confirm or correct my logic?
Reply
Old May 24, 2007 | 12:19 PM
  #2  
98turbls1's Avatar
TECH Fanatic
iTrader: (17)
 
Joined: Nov 2005
Posts: 1,927
Likes: 2
From: Central Oklahoma
Default

I would like to know the same thing... ttt
Reply
Old May 24, 2007 | 06:29 PM
  #3  
Johnny5's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Nov 2001
Posts: 583
Likes: 0
From: NY
Default

maybe this did belong in the Tuning section ??
Reply
Old May 25, 2007 | 08:07 PM
  #4  
Johnny5's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Nov 2001
Posts: 583
Likes: 0
From: NY
Default

Someone has to have done this before... How are all of you going to th400's and not having to change anything?
Reply
Old May 29, 2007 | 06:11 PM
  #5  
Johnny5's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Nov 2001
Posts: 583
Likes: 0
From: NY
Default

No one knows how to correct for a th400 via tuning?
Reply
Old May 29, 2007 | 06:37 PM
  #6  
Zombie's Avatar
10 Second Club
iTrader: (2)
 
Joined: May 2004
Posts: 2,498
Likes: 4
From: Las Vegas
Default

I've corrected my speedo, but I do not remember what the settings were. I did have to change the pulses per mile and the teeth count though to make it accurate for the programmed gear ratio.
Reply
Old May 29, 2007 | 07:24 PM
  #7  
Johnny5's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Nov 2001
Posts: 583
Likes: 0
From: NY
Default

If the pulse count is the same as the 4L60E (40 teeth) can someone just check their settings and tell me what the pulse count and the ppm?

I still have 26" tires and 4.11 gears
Reply
Old May 30, 2007 | 12:22 PM
  #8  
DanZ28's Avatar
10 Second Club
iTrader: (5)
 
Joined: Nov 2001
Posts: 3,412
Likes: 0
From: Cali/Bay Area
Default

Pretty sure I Just copied the values from an A4 tune into my M6 tune to correct the speedo. I'd opent it up but I don't have HP tuners on this PC.

Dan
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old May 30, 2007 | 08:10 PM
  #9  
98turbls1's Avatar
TECH Fanatic
iTrader: (17)
 
Joined: Nov 2005
Posts: 1,927
Likes: 2
From: Central Oklahoma
Default

Originally Posted by DanZ28
Pretty sure I Just copied the values from an A4 tune into my M6 tune to correct the speedo. I'd opent it up but I don't have HP tuners on this PC.

Dan
Can you pm me those values when you get to a computer with HP tuners on it??
Reply




All times are GMT -5. The time now is 08:00 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE