checking pushrod length

Here is what I figure for non adjustables shaft rockers.

With cam on base circle
Screw adjustable pushrod checker out till Snug against rocker.

Tool is 6.800
15 turns @ 0.050 turns
Add 0.025 for preload of hydraulic lifters

Equals 7.575 so rounded up to 7.600 for non adjustable shaft rockers.

Still trying to figure out the 273 adjustable shaft rockers.