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#1 |
Retired Air Force Veteran
![]() Join Date: Aug 2007
Location: Pembroke Pines, Florida 33024
Posts: 1,808
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Proportioning Valve. Do I have the Correct One?
I have done a swap from 6 lug Drums to 5 disk brakes in the front/6 lug drums to 5 lug drums in the back. My truck is a 69' with power brakes. Do I need to change the Proportioning Valve or am I okay with my current setup? Thanks, Harry
Update: Seems I may have to change the Master Cylinder also.
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Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop ![]() Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors Last edited by myoldchevytruck; 05-01-2008 at 10:30 PM. Reason: add text |
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#2 |
Retired Air Force Veteran
![]() Join Date: Aug 2007
Location: Pembroke Pines, Florida 33024
Posts: 1,808
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Re: Proportioning Valve. Do I have the Correct One?
ttt
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Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop ![]() Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors |
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Proportioning Valve. Do I have the Correct One?
you need to change the prop valve to one from a disc brake truck because the residual pressure values are different fot discs and drums
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#4 |
Retired Air Force Veteran
![]() Join Date: Aug 2007
Location: Pembroke Pines, Florida 33024
Posts: 1,808
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Re: Proportioning Valve. Do I have the Correct One?
does the year of the truck matter? Looks like 71-87 would work. How about a later year? (tons of later models in the bone yard) What about the master cylinder. Whatever truck I get the Prop. Valve from' can I use the same master cylinder? Thanks, Harry
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Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop ![]() Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors |
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#5 |
Senior Member
![]() Join Date: Apr 2008
Location: Franklinton NC
Posts: 1,309
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Re: Proportioning Valve. Do I have the Correct One?
I believe you need the master cyl and prop valve.Not sure what years will fit,someone will chime in with that info soon.
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