1LE Proportioning Valve
Thread Starter
Joined: Nov 1999
Posts: 477
Likes: 3
From: Lk. Ronkonkoma, Long Island N.Y., U.S.A.
Car: 1991 Firebird Formula
Engine: 383 Supercharged and Intercooled
Transmission: 6-Speed
Axle/Gears: Stock 10 bolt 3.42
1LE Proportioning Valve
Must the proportioning valve be changed, to the 1LE version, when upgrading Front brakes to 1LE? I have a 1991 Formula with the stock 1LE rears.
I don't think they give you a new proportioning valve when you buy Baer or SSBC kit's, so why would you need it ifor the 1LE conversion?
I don't think they give you a new proportioning valve when you buy Baer or SSBC kit's, so why would you need it ifor the 1LE conversion?
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iTrader: (7)
Joined: Mar 2001
Posts: 6,420
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Read:
https://www.thirdgen.org/techbb2/sho...threadid=59878
From the above:
2)Do I need to get a different proportioning valve? YES. The 1982-1989 (1st design) cars will need GM part# 14089496. The 1989 (late 1989 2nd design) cars will need GM part# 10136840 (which is now 10164112). The 89-92 cars with 4WD brakes already have the correct proportioning valve. After you have done your 1LE front brake upgrade, a quick test drive will verify this.
There ya go.
https://www.thirdgen.org/techbb2/sho...threadid=59878
From the above:
2)Do I need to get a different proportioning valve? YES. The 1982-1989 (1st design) cars will need GM part# 14089496. The 1989 (late 1989 2nd design) cars will need GM part# 10136840 (which is now 10164112). The 89-92 cars with 4WD brakes already have the correct proportioning valve. After you have done your 1LE front brake upgrade, a quick test drive will verify this.
There ya go.
Thread Starter
Joined: Nov 1999
Posts: 477
Likes: 3
From: Lk. Ronkonkoma, Long Island N.Y., U.S.A.
Car: 1991 Firebird Formula
Engine: 383 Supercharged and Intercooled
Transmission: 6-Speed
Axle/Gears: Stock 10 bolt 3.42
Great thanks. I guess I should have looked at that post first.
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