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

Delete 3rd Gear Lockup?

Thread Tools
 
Search this Thread
 
Old Jul 28, 2004 | 10:52 PM
  #1  
RevGTO's Avatar
Thread Starter
Pontiacerator
20 Year Member
Photogenic
Liked
Loved
iTrader: (12)
 
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Question Delete 3rd Gear Lockup?

Would it harm the tranny to delete 3rd gear lock-up? There are many situations where the it'd be better to cruise around town in 3rd, but lock-up causes the engine to bog at lower rpms. For that reason, I normally drive in OD, because when needed, the tranny will downshift and grab third unlocked. I'd rather save the shifting and drive in 3rd unlocked at times.
Reply
Old Jul 29, 2004 | 09:05 AM
  #2  
foff667's Avatar
LS1TECH Sponsor
iTrader: (2)
 
Joined: Jul 2003
Posts: 7,986
Likes: 3
From: Clermont, FL
Default

with hptuners & edit you can adjust where it goes into od...you could just set everything to some absurd # and it just wouldnt go into lockup...with my 2.73's and big cam i had to move the lockup points up in 3rd and forth a bit to get everything to feel right.

lata
Bill
Reply
Old Jul 29, 2004 | 12:12 PM
  #3  
Colonel's Avatar
TECH Senior Member
 
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Default

I have the 3rd gear lockup disabled (set MPH to 255) on both my Z and my 'Vette. I like it better that way. It doesn't hurt a thing.
Reply
Old Jul 29, 2004 | 12:21 PM
  #4  
jimmyblue's Avatar
Moderator
iTrader: (11)
 
Joined: Mar 2002
Posts: 12,604
Likes: 7
From: East Central Florida
Default

Yeah, I took mine out in 3rd, just set the lock MPH
to 255 (HPTuners). That makes 3rd more "sporty"
at least with my relatively mild TCI SF 3000. Lock
in 4th covers my cruising from 38MPH up.
Reply
Old Jul 29, 2004 | 01:44 PM
  #5  
marc_w's Avatar
TECH Addict
 
Joined: Oct 2003
Posts: 2,620
Likes: 0
From: Central, MA
Default

The TCC doesn't lock in 3rd when you have the gear selector in "3", does it?

I sure don't feel mine locking.
Reply
Old Jul 29, 2004 | 02:29 PM
  #6  
Ragtop 99's Avatar
TECH Senior Member
iTrader: (7)
 
Joined: Nov 2001
Posts: 9,491
Likes: 1
From: Bethesda, MD
Default

Marc:

Put a 4000 stall in and you'll know when it locks up.
Reply
Old Jul 29, 2004 | 06:19 PM
  #7  
RevGTO's Avatar
Thread Starter
Pontiacerator
20 Year Member
Photogenic
Liked
Loved
iTrader: (12)
 
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Default

Good. I'm hooking up with a guy and doing some HP tuning tomorrow and we'll just move the lock-up speed to a preposterous number. Didn't want to do it if it would create excess heat in the tranny or other problems.
Reply
Old Jul 30, 2004 | 09:06 AM
  #8  
marc_w's Avatar
TECH Addict
 
Joined: Oct 2003
Posts: 2,620
Likes: 0
From: Central, MA
Default

Ragtop: That's why I went with the baby Yank 2600/2800. I tow a lot, and didn't want the large variance in RPM's.
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 12:17 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