[Gearhead999]

I might of missed something here, but first you have to know if it is a solid or hyd lifter cam.

Next, you have to know what type of rocker studs you have. The early studs were straight studs with threads on the end. The later model heads of studs that have a shoulder on them part way down.

The later hare tighten up with no adjustment. Hyd. only. The earlier straight studs must be adjusted.

Mech. cams need a lash setting. The heads must also have either guide plates or heads with small push rod holes that hold the push rods from moving around.
Roll the engine over till the valve is closed and set the lash. Go to the others and do the same.

Hyd. cams on the straight studs also need to be adjusted, but too Zero. Here's how I do it. Roll the engine till the valve is closed. Spin the push rod between your fingers and slowly tighten the rocker down till you feel resistance in the push rod. Then add 1/2 turn and stop. Go to the otheres and do the same.

Or, you can do it the messy way.

Mech. Lifters--Start the engine and set the lash with a feeler gauge as its running. Adjusting the rockers till there is a very little bit of drag moving the feeler guage in and out at the valve stem.

Hyd. Lifters--Start the engine. Loosen the rocker till it starts to clack. Slowly turn it in till it is quiet. Then add 1/2 turn.

This is a mess to do. A set of cut out valve covers helps alot. Or lots of shop rags. That's why I prefer the non-running method.

Good luck.