Your pics don't give the minute differences justice.

Longer pushrod equals more max lift while a shorter pushrod gives quicker more mid lift but with less max lift.


Significant difference??, in the scheme of the whole overall lift event, either way, long/short pushrod, doesn't make any significant difference in performance on the engine involved. The valve train, does like the longer pushrod though, less stress on the rocker arm because of the lesser angles involved. IMO