340 xhead spring shimming, height and pocket question(s)

Bewy said

Do not rely on 'specs' on the box or elsewhere for the coil bind dimension of a valve spring; measure it. Put a spring in a vice & compress until solid, & measure. I just measured some PAC springs last week for CB, was NOT what was on the box.

Click to expand...

I never stack a spring solid, & it's not required, min. installed ht. - max poss. lift. Where the gaps are depends on spring type(traditional/progressive/beehive/conical), but the spring should have a min. of .025-.035" space left. A beehive/conical, it may all be on the top coil, traditional .005-.010 between each, straight progressive somewhere between the two.
Agree for sure, check all dimensions, & loads at the relevent dimensions. Take NOTHING for granted, especially these days..