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

How To Spot Manual Valve Body?

Thread Tools
 
Search this Thread
 
Old Jun 4, 2006 | 07:13 PM
  #1  
Cam-aro's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Apr 2006
Posts: 552
Likes: 0
From: Joplin, Missouri
Car: '91 Z28
Engine: L98 H/C/I - 400whp
Transmission: T56
Axle/Gears: Moser 12-Bolt(4:30 w/spool)
How To Spot Manual Valve Body?

My car has a Hughes Performance Street/Strip 700r4. I'm curious to whether it has a manual valve body or not. Right now, the tranny is on a transmission stand and the shell has been opened so I can easily get inside to look at it... how would I know if my tranmission has a manual valve body? Certain things to look for?
Reply
Old Jun 4, 2006 | 07:23 PM
  #2  
SebasIroc's Avatar
Junior Member
iTrader: (1)
 
Joined: Oct 2004
Posts: 88
Likes: 0
From: Québec
Car: Iroc-z 86
Engine: 350 4bbl
Transmission: built up 700r4
Axle/Gears: ls1 4.10 posi
theres way to see that its a manual valve body.....but like mine we put a manual shift kit from transgo and if i put it in od im in 4th gear....you will know it whe it will be install on the car

Seb
Reply
Old Jun 4, 2006 | 07:46 PM
  #3  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 234
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Pull the governor and see if it has a spring to deativate it.

RBob.
Reply
Old Jun 4, 2006 | 10:19 PM
  #4  
Cam-aro's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Apr 2006
Posts: 552
Likes: 0
From: Joplin, Missouri
Car: '91 Z28
Engine: L98 H/C/I - 400whp
Transmission: T56
Axle/Gears: Moser 12-Bolt(4:30 w/spool)
Originally Posted by RBob
Pull the governor and see if it has a spring to deativate it.

RBob.
Deactivate what? The valve body? From what I've read though... the Hughes Street/Strip trannies came with manual valve bodies. But I dunno, I'm confused!
Reply
Old Jun 4, 2006 | 10:52 PM
  #5  
1TUF92Z's Avatar
Senior Member
 
Joined: Jun 2002
Posts: 846
Likes: 0
From: Elk Grove, CA USA
Car: 92Z28,91Z28,91Z281LE,95ZR-1,08Z06
Engine: 406, 350, 305, 350, 427
Transmission: auto, auto, 5-speed, 6spd, 6 spd
Axle/Gears: all stock
Originally Posted by Cam-aro
Deactivate what? The valve body? From what I've read though... the Hughes Street/Strip trannies came with manual valve bodies. But I dunno, I'm confused!
does it have the kickdown cable? if it does have it, then it is not a full manual.
Reply
Old Jun 5, 2006 | 06:53 AM
  #6  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 234
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Originally Posted by Cam-aro
Deactivate what? The valve body? From what I've read though... the Hughes Street/Strip trannies came with manual valve bodies. But I dunno, I'm confused!
Sorry, if the governor is deactivated. Since it isn't used the weights are normally tied up (outward I believe). This would be for a full manual setup. Where the transmission is always in the same gear as the shift selector is in.

RBob.
Reply
Old Jun 5, 2006 | 10:21 AM
  #7  
Cam-aro's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Apr 2006
Posts: 552
Likes: 0
From: Joplin, Missouri
Car: '91 Z28
Engine: L98 H/C/I - 400whp
Transmission: T56
Axle/Gears: Moser 12-Bolt(4:30 w/spool)
Originally Posted by RBob
Sorry, if the governor is deactivated. Since it isn't used the weights are normally tied up (outward I believe). This would be for a full manual setup. Where the transmission is always in the same gear as the shift selector is in.

RBob.
Is there something in between 'full manual setup' and 'no manual setup'? My car stays only in gear selected, but if I put it in OD while car is still in 3rd... it'll wait to shift till OD until the rpms haven't gotten to a shift point.
Reply
Old Jun 5, 2006 | 12:22 PM
  #8  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 234
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Between 'full manual setup' and 'no manual setup'? A stock 700R4 will upshift to 2nd even with the selector in 1st. This can be changed with a reprogramming kit (such as a TransGo). AFAIK that is the only in-between that I know of.

A true manual will always be in the gear the selector is in. Such as if at a stand still with the selector in 3rd, the vehicle will pull out with the transmission in 3rd gear. Not good for the trans.

My car stays only in gear selected, but if I put it in OD while car is still in 3rd... it'll wait to shift till OD until the rpms haven't gotten to a shift point.

If when at a stop you put the selector in 3rd, does it pull out in 3rd? Or does it start in 1st and upshift to 2nd, then 3rd? If it pulls out in 3rd then I don't really recommend doing this as it will kill the 3/4 clutch packs.

RBob.
Reply
Old Jun 5, 2006 | 07:38 PM
  #9  
SebasIroc's Avatar
Junior Member
iTrader: (1)
 
Joined: Oct 2004
Posts: 88
Likes: 0
From: Québec
Car: Iroc-z 86
Engine: 350 4bbl
Transmission: built up 700r4
Axle/Gears: ls1 4.10 posi
for the kick down cable it need to be there even if you have a full manuel trans....since the kick down is not there only for shifting, it boost oil pressur at Wot.....so if you remove the cable your trans will live about 1 mile even if you have a shift kit.

Seb
Reply
Old Jun 5, 2006 | 09:55 PM
  #10  
Cam-aro's Avatar
Thread Starter
Senior Member
iTrader: (4)
 
Joined: Apr 2006
Posts: 552
Likes: 0
From: Joplin, Missouri
Car: '91 Z28
Engine: L98 H/C/I - 400whp
Transmission: T56
Axle/Gears: Moser 12-Bolt(4:30 w/spool)
Originally Posted by SebasIroc
for the kick down cable it need to be there even if you have a full manuel trans....since the kick down is not there only for shifting, it boost oil pressur at Wot.....so if you remove the cable your trans will live about 1 mile even if you have a shift kit.
Yeah, the kickdown seemed pointless in my setup. As for the 'valve body'... when in first, the car stays in first, will not auto upshift. If I put the car in Drive though, the car will shift from 1st thru 3rd as needed.
Reply
Old Jun 6, 2006 | 07:47 AM
  #11  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 234
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Originally Posted by Cam-aro
... when in first, the car stays in first, will not auto upshift. If I put the car in Drive though, the car will shift from 1st thru 3rd as needed.
This would mean that it is not a manual shift transmission. Most likely has had the reprogramming done to allow 1st to the held. That is a common modification. A stock 700R4 will hold the other gears to whatever RPM. With this each gear can now be held.

And the trans will downshift as required by the shifter.

RBob.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
History / Originality
27
May 10, 2023 07:19 PM
backtothe80s
Suspension and Chassis
33
Sep 5, 2015 12:39 AM
lakeffect2
Cooling
11
Aug 23, 2015 08:44 AM
crazynights
Transmissions and Drivetrain
10
Aug 21, 2015 06:53 AM
Out-Cast
Tech / General Engine
5
Aug 17, 2015 10:57 AM




All times are GMT -5. The time now is 10:08 PM.