Now, set up your dial indicator, usually on a magnetic base, so you need to fabricate a piece of steel that you can bolt to the towers.
Let me digress a little, regarding numbers. We are going to degree by lobe center method. Lobe center is measurement taken at. 0050 lift opening and closing. I picked my numbers off of past experience, but it also agrees with what is published on Factory Pro website. Not not arbitrarily choose degree numbers, you may be disappointed. You may lunch a motor. PTV clearance is critical.
Also, I measured stock lobe centers, before I took anything apart, and came up with 113* intake, and 107.5 exhaust. My goal is to reach 105 intake and 102 exhaust.
I placed my plate on the towers and bolted it in place, and set up dial indicator, making a longer tip out of a heavy guage coat hanger. It is imperative that you set it up with the dial indicator in line with the valve stem to minimize it walking around during bucket depression.
When you think you have it set up, zero out your dial face, rotate the motor and few times and make sure you dial always returns to zero..... Odds are it won't without a few adjustments.
Once you have it set up, SLOWLY turn motor forward until dial begins to move, stop on... 0050, and record number on degree wheel.
In this case 20
Now keep rotating it slowly as it opens fully, then stop it on the same. 0050 as it cases and record the number... In this case 50.
Now for the math:
Opening BTDC+closing ATDC +180/divided by 2 minus the smaller number = LC
If this isn't what you want, loosen one cam bolt, rotate crank, loosen the other bolt, and turn
crank a little, then tighten one bolt.
On intake cams, for smaller lobe centers, roll motor backward. Roll motor forward for larger LC.
It took me three tries to hit 105.
When you hit it, roll motor around to loose cam sprocket bolt, remove it, and reinstall with blue loctite, roll motor forward to other bolt, do the same.