1989 PBR disc brake PROPORTIONING VALVE

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Old 04-11-2010, 11:29 PM
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Car: 1991 z28 vert/91 rs vert/85 TA vert
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1989 PBR disc brake PROPORTIONING VALVE

This valve was removed from a 1989 formula 350. It had front steel calipers and rear aluminum PBR calipers. A must have if doing a drum to disc swap..... $60 shipped USPS priority mail...
Attached Thumbnails 1989 PBR disc brake PROPORTIONING VALVE-dsc06948.jpg   1989 PBR disc brake PROPORTIONING VALVE-dsc06949.jpg  
Old 04-12-2010, 07:19 AM
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Re: 1989 PBR disc brake PROPORTIONING VALVE

i am interested i have a 91 camaro rs that i want to put i 9-bolt pbr disk into but need the valve. do u take paypal???if so i will purchase asap (as soon as u respond)
Old 04-12-2010, 02:05 PM
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Re: 1989 PBR disc brake PROPORTIONING VALVE

pm sent
Old 04-22-2010, 10:17 PM
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Re: 1989 PBR disc brake PROPORTIONING VALVE

Sale pending
Old 04-23-2010, 02:19 AM
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Re: 1989 PBR disc brake PROPORTIONING VALVE

Don't mean to meddle, but just thought I'd point out that the threads were different on most of the 89 prop. valves compared to a 91. GM changed the thread pitch on the lines going into the valve right towards the end of 89. I had to figure out which thread pitch I had on my 89 before putting a new valve on it. Turned out to be the earlier style.
Old 04-23-2010, 07:11 AM
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Re: 1989 PBR disc brake PROPORTIONING VALVE

Perhaps the following will help:

1st design: M1.0 tube nut threads (For 1982 - early 1989 applications)
2nd design: M1.5 tube nut threads (Late 1989+)

Good luck to buyer and seller.

JamesC
Old 11-15-2010, 02:02 PM
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Re: 1989 PBR disc brake PROPORTIONING VALVE

I sold the one from the formula. I do have another from an 89 iroc-z, same disc setup, front steel and rear pbr aluminum calipers. $60 shipped
Old 11-27-2010, 06:33 PM
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Transmission: 700r4/ 5 speed
Axle/Gears: 4th gen rear in progress/stock
Re: 1989 PBR disc brake PROPORTIONING VALVE

TTT
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