Join Date: Nov 1999
Location: Central California, USA
I've replaced three or four of them on our farm pickups the last fiew years. I even cut one apart since there is no apparent damage outside. Inside the stem is hollow and carbon builds up on the underside of the diaphragm, affects opening modulaton somehow.
On one, I had someone hold the brakes while in drive and slowly open the throttle while I watched the valve, I could see the valve opening too far.
Glad you found it. GM has the best valves, if you go aftermarket the valve is generic, with a bag of restrictor washers to select from. Not as nice a deal.
Check my web page for First Gen Camaro suspension info:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
67 RS 327 original owner. 1965 Lola T-70