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

th350 in boosted car

Thread Tools
 
Search this Thread
 
Old 12-21-2008, 11:44 AM
  #1  
On The Tree
Thread Starter
 
blownbird355's Avatar
 
Join Date: Feb 2006
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts

Default th350 in boosted car

I'm going to a th350 in my boosted car, what do you do for the Vac Modulator to keep boost out is it as simple as a check vlv or not?
Old 12-21-2008, 06:08 PM
  #2  
10 Second Club
iTrader: (2)
 
ForcedInduction's Avatar
 
Join Date: Jun 2007
Location: Manchester, NH
Posts: 202
Likes: 0
Received 1 Like on 1 Post

Default

a checkvalve would work fine and cheap!
Old 12-21-2008, 06:51 PM
  #3  
Banned
iTrader: (10)
 
9000th01ss's Avatar
 
Join Date: Feb 2008
Posts: 3,235
Likes: 0
Received 0 Likes on 0 Posts
Default

I believe a check valve could lead to transmission failure.

A check valve will allow vacuum to pull the modulator in (low line pressure), but since it allows vacuum to travel one way it might never release it. So the modulator is either going to release very slow or not at all, it's going to stay stuck at low line pressure.

I go with a cable actuated modulator.

Last edited by 9000th01ss; 12-21-2008 at 06:59 PM.
Old 12-21-2008, 08:38 PM
  #4  
10 Second Club
iTrader: (7)
 
calongo_SS's Avatar
 
Join Date: Feb 2004
Location: Victoria, TX
Posts: 2,070
Likes: 0
Received 1 Like on 1 Post
Default

Transgo makes a little blow off valve to keep boost from getting to the trans.
Old 12-21-2008, 09:39 PM
  #5  
On The Tree
Thread Starter
 
blownbird355's Avatar
 
Join Date: Feb 2006
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by 9000th01ss
I believe a check valve could lead to transmission failure.

A check valve will allow vacuum to pull the modulator in (low line pressure), but since it allows vacuum to travel one way it might never release it. So the modulator is either going to release very slow or not at all, it's going to stay stuck at low line pressure.

I go with a cable actuated modulator.
I kinda thought it would need a way to bleed off
Old 12-21-2008, 09:53 PM
  #6  
On The Tree
Thread Starter
 
blownbird355's Avatar
 
Join Date: Feb 2006
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by calongo_SS
Transgo makes a little blow off valve to keep boost from getting to the trans.
P/N for this? Is it used in conjuction with Check valve?
Old 12-21-2008, 10:36 PM
  #7  
10 Second Club
iTrader: (7)
 
calongo_SS's Avatar
 
Join Date: Feb 2004
Location: Victoria, TX
Posts: 2,070
Likes: 0
Received 1 Like on 1 Post
Default

VBP-VAC

It is the check valve / blow off valve, whatever you want to call it.
Old 12-21-2008, 11:55 PM
  #8  
Banned
iTrader: (10)
 
9000th01ss's Avatar
 
Join Date: Feb 2008
Posts: 3,235
Likes: 0
Received 0 Likes on 0 Posts
Default

Here are some links.

One More,.
Old 12-29-2008, 03:58 PM
  #9  
On The Tree
Thread Starter
 
blownbird355's Avatar
 
Join Date: Feb 2006
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts

Default

Thanks all!



Quick Reply: th350 in boosted car



All times are GMT -5. The time now is 04:36 PM.