can the pv from a drum car be used w/a disc rear? I plan on swapping out my drum rear to a disc rear and I need to know if I can reuse it.
Thx.

 

I usually change it. The GM part #'s are different for both.

 

Could/would it work tho?

 

anyone?

 

Go ahead. I use my stock drum prop valve for my LS1 disc rear. Granted, I have 13" C4HD brakes up front. I'll be gutting it and adding an adjustable valve one of these days..

 

Yes, but it may depend on the year of your pv. Here's my contribution on the subject a few years back:

https://www.thirdgen.org/techbb2/sho...&highlight=J65

I had a bias issue when I first swapped in a '88 9-bolt posi disc rear end in my 90 RS. I swapped PV's a few times to no avail. A leaking brake line turned out to be the culprit.

Lon

 

WHEW! Lots of reading!
Ok--so it looks like I'll be ok then since I'm putting an 86 rear--which will have an 89 rear disc setup--into a 92 rear drummed car--so it'll be a direct swap w/no other issues about master cylinders or pv's.