about a year ago i installed a narrowed 4th gen rear in my car
to get rid of the 9bolt ,well the 4th gen alum. callipers are barely working ?
do i need to use a different or adjustable proportioning valve due to the larger fluid capacity of the new callipers .
any help greatly appreciated.

 

if you swtiched from drum to disk you need the 4 wheel disk proportioning valve .. I have a used one for $5 if you want it ..chevy gets 40 ?? for them

TVP

 

OHHH, I'm sorry about that .
my car originaly 4wd to begin with,i should have mentioned that.

 

you have an 87 setup ?? they change the entire setup to put the
aluminum calipers on the back ... in 1988 1/2

TVP