View Single Post
Old 04-11-2011, 04:20 AM   #2
dmack91
Registered User
 
dmack91's Avatar
 
Join Date: Jan 2011
Location: Redmond, OR
Posts: 763
Re: porportion valve blues

Not an expert, but it regulates the pressure between the front and rear brake assemblies. Trucks especially need them since they are so light on the rear. If braking was the same front to rear, the rears would lock up every time.
__________________
68 Chev C20- son has it now
83 K20 - bought from son
70 C20 - in progress
dmack91 is offline   Reply With Quote