Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - measure valve lift at retainer
View Single Post
  #3 (permalink)  
Old 05-25-2008, 10:09 AM
tdkkart tdkkart is offline
Registered User
Last photo:
Join Date: Mar 2007
Location: Iowa
Posts: 222
Wiki Edits: 0

Thanks: 2
Thanked 21 Times in 15 Posts
Pushrod lenghth should have no affect whatsoever on the lift at the valve, except on extreme examples where pushrod flex is a problem.

What I would suspect is that your rocker ratio is not exactly 1.5, woldn't be unusual at all, especially with "off-brand" rockers. Rocker flex is also a possiblity if your springs are really heavy.

Set up a test stand to check your rockers with very little spring pressure, I'll bet the ratio is actually closer to 1.44 as indicated by your measurements.
Reply With Quote