427stang, can I measure the lift without having to loosen or remove the rocker? The lash is set correctly now, and replacing springs and lashing a solid, especially with a stud girdle, is above my pay grade.
If I can get the right springs, I can find somebody to install and set it up.
Sure, you'll have to measure carefully and likely need the opposite end of calipers or a machinists rule, but you can measure.
- Start with the cam side, make sure you are on the base circle, measure the lowest point, then turn the motor until the measurement stops growing, generally I would have a degree wheel on it, but if you are careful, once you find max lift, you know lobe lift
- Then to back up your measurement, I would do the same at the retainer, back it up until you have lash, measure closed height, turn to max lift, measure open height.
May take a few times to get the numbers to make sense but you should be able to calculate what you see on both sides.
Valve lift = (lobe lift X rocker ratio) - lash
Also be sure to do both intake and exhaust, they are likely different
The only one that really matters is valve lift, but if you can back into each number from the other info, you will be more comfortable that you measured correctly