stamped steel rocker arm delection

[gmonde]

Originally Posted by Grant Eldridge

The deflection I've measured is about .015" from checking spring to race springs on my 396 stocker motor. This is a combination of the pushrod flex, rocker stud flex and the rocker arm itself, not sure how you'd isolate the amount in the rocker alone but it is significant. NHRA checks lift at the retainer, using a solid lifter of the same height, so you can adjust the lobe lift to compensate for the loss from what I understand....

grant:how much spring presure are you running??i know big blocks have a 3/8 push rod but you probably run a 7/16" or 1/2" and the ratio is 1.7 ,,.015 is not bad i am getting more ..020 -.025 and thats with a 3/8 push rod gmonde