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

slipping tranny 1-2 shift

Thread Tools
 
Search this Thread
 
Old Aug 26, 2008 | 12:14 AM
  #1  
crmartin99's Avatar
Thread Starter
On The Tree
iTrader: (3)
 
Joined: Mar 2007
Posts: 136
Likes: 0
Default slipping tranny 1-2 shift

So i went to the track and on my last pass of the evening the tranny bounced off of the limiter, i let off and it shifted.

In the return lane i notice that it's slipping in the 1-2 shift pretty badly, and i have to give it virtually NO throttle and it will shift. Once it shifts into 2nd all problems cease and it drives no different than it ever did.

Over the past few days i've spent alot of time seraching and can't find a problem that is really like mine. I have a few questions.

Anyone have a diagnosis? If so, is there a quick temporary fix?

Through my reading of this and many other forums i realize that i'm in need of a rebuild, but being a college student it will be awhile before i can get the money up to have it rebuilt and with it being driven daily, i need it back on the road asap (in gimp mode of course haha)

second set of questions:

I've looked at MANY rebuild kits, through reading and searching i've think i've found the one that suits my needs best, which is basically stock with a 100 shot of n2o. Once of the kits i was looking at includes:

"Complete description of the parts in the rebuild kit"

"Front pump"
Seal retainer
Late design front seal
13-vane rotor with vanes, slide, rotor guide & pin assembly
TransGo steel rings & priming spring (over 5,500 rpm)
New replacement stator support 300mm
.500 boost valve

"Clutches, Steels And Pressure Plates"
4 Borg-Warner reverse/input clutches .078
4 Reverse/input "low drag" Turbulator steels .078
1 Reverse waved steel (eliminates the belleville spring that tears up the inside of the drum)
5 Borg-Warner forward clutches .070
5 Forward steels .090
2 Borg-Warner overrun clutches .078
2 Overrun steels .091
5 Borg-Warner low/reverse clutches .087
5 Low/reverse "low drag" Turbulator steels .068

Your choice of the Borg Warner Hi-Energy, 8 clutch setup for the 3-4 pack below,

8 Borg-Warner Hi-Energy 3-4 clutches .080
5 3-4 steels Kolene .060
3 3-4 Steels Kolene .076
1 3-4 top pressure plate .128
1 3-4 apply pressure plate .225
1 3-4 snap ring .062

or the "modified" Raybestos Z-Pak, 16 one sided clutch/steel setup for the 3-4 pack.

16 one sided clutch/steel arrangement
1 5-tang apply ring
1 3-4 bottom pressure plate .128
1 3-4 top pressure plate .145
1 3-4 snap ring .062

Your choice of the input sprag below

Borg Warner dual cage 29 element design
or the Raybestos SKF single cage 29 element design

"Other" (these are additional parts that come in this kit)
Sealed Power Beast sunshell
Borg-Warner low/reverse roller assembly (late design)
Vamac 3 lip rear seal (prelubed)
Transtech paper & rubber (gasket) kit
Transmission filter (OEM)
Bushings (latest updates, including Teflon front pump & extension)
Thrust washer kit
Sealing ring kit
HD Bearing kit (Timken)
Borg-Warner Hi-Energy 2-4 band
Trans-Go Performance Shift kit w/accumulation for nice part throttle shifts
New steel molded rubber pistons for forward & 3-4
New aluminum 2nd, 4th & forward accumulator pistons
New oem 4th accumulator pin
New 2nd & forward "hardened" (RC52) accumulator pins

Last edited by crmartin99; Aug 26, 2008 at 12:20 AM.
Reply
Old Aug 26, 2008 | 10:55 AM
  #2  
crmartin99's Avatar
Thread Starter
On The Tree
iTrader: (3)
 
Joined: Mar 2007
Posts: 136
Likes: 0
Default

bump!
Reply
Old Aug 26, 2008 | 11:14 AM
  #3  
performabuilt's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
iTrader: (25)
 
Joined: Aug 2006
Posts: 10,854
Likes: 80
From: BLOOMSBURG PA
Default

The kit you have listed is fine, I will say however if you plan to do this yourself and you have no experience.Not trying to sound like a naysayer but you will likely before its over have alot more money in it than you think I am going to send you a PM with another option
__________________
Built..PerformaBuilt..Tough

Call 888-744-6542


Reply
Old Aug 26, 2008 | 01:43 PM
  #4  
crmartin99's Avatar
Thread Starter
On The Tree
iTrader: (3)
 
Joined: Mar 2007
Posts: 136
Likes: 0
Default

Not going to do it myself, was going to have a reputable local shop install it.
Reply




All times are GMT -5. The time now is 12:45 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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