Transmissions and Drivetrain Need help with your trans? Problems with your axle?

I need TH350 shifting help

Thread Tools
 
Search this Thread
 
Old 07-30-2002, 02:31 PM
  #1  
Member
Thread Starter
 
mefreema's Avatar
 
Join Date: Nov 1999
Location: MI, USA
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
I need TH350 shifting help

When I let my TH350 trans shift itself from 1st to 2nd it shifts fine (5000rmp-ish) maybe a little less. When I manually shift it out at 6000rmp it takes for ever to shift and it is really soft. My friend said it may be that the vaccume drops too much at the higher rpms and the tranny doesnt have enough to make a firm shift. Is this true and if so how can i fix it. Also how can I move my (automatic) shift point to a higher rpm. With my new motor setup I would like to shift out around 5800rpm.
Old 07-31-2002, 10:34 PM
  #2  
Member
Thread Starter
 
mefreema's Avatar
 
Join Date: Nov 1999
Location: MI, USA
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Anyone, Anyone????

Also what stall converter would you guys recommend for my setup (see sig) It will be used for mostly street and some strip use.
Old 08-01-2002, 12:26 AM
  #3  
Senior Member

 
Jay 727's Avatar
 
Join Date: Jun 2001
Location: FL
Posts: 639
Likes: 0
Received 0 Likes on 0 Posts
Automatic wide open throttle shift point is raised by lightening the governor weights.
The vacuum modulator gives line pressure a boost when it has little or no vacuum, first try adjusting the modulator screw clockwise, this will increase modulator pressure and make the shifts alittle more firm and later.
Old 08-02-2002, 07:33 AM
  #4  
Supreme Member

 
82camaro's Avatar
 
Join Date: Nov 1999
Location: NE
Posts: 2,860
Likes: 0
Received 2 Likes on 2 Posts
Car: 82 camaro SC
Engine: 350
Transmission: 700r4
If the carb is too small, you might be getting some vacuum at the higher rpms.
Old 08-02-2002, 07:44 AM
  #5  
Member
Thread Starter
 
mefreema's Avatar
 
Join Date: Nov 1999
Location: MI, USA
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
The carb is a quadrajet.
Old 08-02-2002, 05:47 PM
  #6  
Supreme Member

 
F-BIRD'88's Avatar
 
Join Date: Sep 2001
Location: Ontario, Canada
Posts: 6,111
Received 52 Likes on 49 Posts
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
I would buy a 2800/3000 stall converter for your car.

www.bmracing.com

Last edited by F-BIRD'88; 08-02-2002 at 05:53 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Cam-aro
Camaros Wanted
2
11-12-2015 03:35 PM
darwinprice
Organized Drag Racing and Autocross
17
10-11-2015 11:51 PM
racereese
Tech / General Engine
14
10-03-2015 03:46 PM
HoosierinWA
Members Camaros
6
09-29-2015 12:43 PM
89newfun
Engine/Drivetrain/Suspension Wanted
2
09-16-2015 09:28 AM



Quick Reply: I need TH350 shifting help



All times are GMT -5. The time now is 05:17 AM.