May 25, 2014 #1 SS/GN Well-Known Member Joined Jun 30, 2005 Messages 2,903 I have a PTS Extreme 570 boost valve and a stock Sonax 471 boost valve. I purchased these a few years back and do not need. They are new and the spring is for the PTS valve. $40 for the pair plus shipping Attachments buick tranny 001.JPG 2.2 MB · Views: 45 buick tranny 005.JPG 2.2 MB · Views: 44 buick tranny 006.JPG 2.2 MB · Views: 39
I have a PTS Extreme 570 boost valve and a stock Sonax 471 boost valve. I purchased these a few years back and do not need. They are new and the spring is for the PTS valve. $40 for the pair plus shipping
