here is the way I do it others may do it differently. I find top dead center #1 cylinder. I have my balancer marked in four positions 12, 3, 6, and 9 oclock. #1 cylinder is at 12 I adjust intake and exhaust valves to .018 with a feeler gauge. Then I rotoate the crank shaft 1/4 turn to put the next cylinder (8) at TDC firing. The firing order is 18436572. After each cylinder is adjusted 1/4 turn at the crank (watching the marks to keep track). The feel gauge I use is from Snap-On and has 2 thickness's per blade so it has on the end .018 and about 3/4 of an inch it widens to .020 so I can quickly see that is at least .018 and not more than .020. I adjust that valves after taking the car for a cruise to make sure that everything is heated evenly.

There are a few differences between the 2 types I will mention what I can think of here and anybody can chime in any others I missed. On a solid (mechanical) roller camshaft the lifters are solid, meaning the pushrod sits in the lifter and follows the profile exactly. On a hydraulic camshaft the lifter has a hydralic plunger that is filled with oil pressure and acts like a cushion. When the ramp of the camlobe begins the plunger can actually lose a small bit of the profile lift by bleeding off. What a hydralic does is it keeps the valve train quiet and the is always some tension on the parts. A solid on the other hand has to have some lash included otherwise the valve wouldn't close.