4 wheel disc proportioning valve
#1
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
Join Date: Apr 2002
Location: Deer Park, N.Y.
Posts: 514
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1983 z-28/SFC/bilsteins/adj.arms
Engine: 355sbc/Demon650dp/hedmanheaders/
Transmission: t-5, alum DS
Axle/Gears: 3.42 torsen posi, baer discs
4 wheel disc proportioning valve
swapped a disc rear end, still has the drum prop. valve...can i just take out the spring and plunger from the valve to make it 50/50 front to rear? i'm sure it's now 70/30 front to rear for disc/ drum. anybody done this or even heard about this? i just don't want to go through the pain of re-plumbing a new valve.
#2
Banned
Join Date: Feb 2003
Location: Mostly in water off So. Cal
Posts: 1,455
Likes: 0
Received 1 Like
on
1 Post
Car: '87 Chev
Engine: 60*V6
Transmission: DY T700
What year car do you have?
Edit: Ijust checked your profile, its says '83 Z28.
Use the 1LE(J65) propotioning valve Part # 14089496
Thread pitch is the same as your drum valve and will bolt right in. '89 and later have a different thread pitch. This valve will work on any 82-88 car.
Edit: Ijust checked your profile, its says '83 Z28.
Use the 1LE(J65) propotioning valve Part # 14089496
Thread pitch is the same as your drum valve and will bolt right in. '89 and later have a different thread pitch. This valve will work on any 82-88 car.
Last edited by AGood2.8; 05-04-2003 at 09:29 PM.
#3
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
Join Date: Apr 2002
Location: Deer Park, N.Y.
Posts: 514
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1983 z-28/SFC/bilsteins/adj.arms
Engine: 355sbc/Demon650dp/hedmanheaders/
Transmission: t-5, alum DS
Axle/Gears: 3.42 torsen posi, baer discs
thanks agood2.8...really? that's what freaks me out 'cause threads and line sizes vary by so much! just to make sure: it's a '83 z-28..has a brass prop. valve (not the machined aluminum ones later) ..rear line goes into the front of the valve..plunger access is on the bottom of the valve....i swapped a '86 rear.
#4
Moderator
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Originally posted by AGood2.8
This valve will work on any 82-88 car.
This valve will work on any 82-88 car.
![Confused](https://www.thirdgen.org/forums/images/smilies/confused.gif)
#5
Senior Member
![](https://www.thirdgen.org/forums/images/ranks/tgo10.gif)
Thread Starter
Join Date: Apr 2002
Location: Deer Park, N.Y.
Posts: 514
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1983 z-28/SFC/bilsteins/adj.arms
Engine: 355sbc/Demon650dp/hedmanheaders/
Transmission: t-5, alum DS
Axle/Gears: 3.42 torsen posi, baer discs
this is confusing!
#6
Banned
Join Date: Feb 2003
Location: Mostly in water off So. Cal
Posts: 1,455
Likes: 0
Received 1 Like
on
1 Post
Car: '87 Chev
Engine: 60*V6
Transmission: DY T700
I sorry guys I should have been more clear- That valve will work on any pre89 car that has an existing square shaped aluminum proportioning valve -That looks the same shape (or style) as the #14089496 combo valve. it works as a direct replacement for any combo valve of that style.
Edit: Heck, I'll tell you what, I'll take a picture of mine so you can see what it looks like- If your stock valve doesn't have the same square shape then it won't work. Give me 5 mins.
Edit: Heck, I'll tell you what, I'll take a picture of mine so you can see what it looks like- If your stock valve doesn't have the same square shape then it won't work. Give me 5 mins.
Last edited by AGood2.8; 05-05-2003 at 10:04 PM.
Trending Topics
#8
Banned
Join Date: Feb 2003
Location: Mostly in water off So. Cal
Posts: 1,455
Likes: 0
Received 1 Like
on
1 Post
Car: '87 Chev
Engine: 60*V6
Transmission: DY T700
Originally posted by AGood2.8
prop/combo valve pic- 1LE (J65) combo valve for pre '89 cars.
GM lists two 1LE valves- one as pre'89 and the other as '89-92.
prop/combo valve pic- 1LE (J65) combo valve for pre '89 cars.
GM lists two 1LE valves- one as pre'89 and the other as '89-92.
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
Engine/Drivetrain/Suspension Parts for Sale
1
08-08-2015 08:16 PM
3rd, aluminum, combo, disc, disk, generation, gm, machined, modify, plunger, proportioning, proprtioning, thirdgen, valve, wheel