I stole 2 pics from ebay. Which does what? I think 1st pic is kick down. Manual is on the way till then.
http://www.v8buick.com/index.php?threads/67-riviera-switch-pitch-is-it-adjustable.312939/ http://www.buickperformanceclub.com/switchpitch.htm https://www.teambuick.com/reference/library/67_chassis/files/74-b.php Devon