black1990RS
Junior Member
close
Oct 24, 2014
- Join DateMar 2008
- Locationkingman, AZ
- Posts:38
- iTrader Positive Feedback0
- iTrader Feedback Score(0)
- Car1990 camaro RS
- Engineforged 383,8.7;1 200hp nitrous
- Transmissiont56 6 speed
- Axle/Gearsquick perfomance 9 inch with 4.11s
- Likes:0
- Liked:0 Times in 0 Posts
swapping from a 3rd gen 9 bolt borg warner to a 4th gen 10 bolt posi. curious if anyone know wether or not ill have to change the proportioning valve?
9 bolt has cast iron calipers and 10 bolt has aluminum.
9 bolt has cast iron calipers and 10 bolt has aluminum.
JamesC
Moderator
close
Apr 15, 2026
Quote:
9 bolt has cast iron calipers and 10 bolt has aluminum.
Yes, for best brake performance. You'll need the second-design 1LE valve.Originally Posted by black1990RS
swapping from a 3rd gen 9 bolt borg warner to a 4th gen 10 bolt posi. curious if anyone know wether or not ill have to change the proportioning valve?9 bolt has cast iron calipers and 10 bolt has aluminum.
http://www.flynbye.com/catalog/i172.html
JamesC