0 deg TDC, both number one valves shut.
Adjust the #1 exhaust valve
Adjust the #1 intake valve
Adjust the #3 exhaust valve
Adjust the #5 intake valve
Adjust the #7 intake valve
Adjust the #2 intake valve
Adjust the #4 exhaust valve
Adjust the #8 exhaust valve
Now rotate the engine 360 degrees. The mark
on the balancer should be back at the TDC
mark. Keep in mind that this is not the TDC
where #1 would be firing! It's where #6 would
fire.
Adjust the #3 intake valve
Adjust the #5 exhaust valve
Adjust the #7 exhaust valve
Adjust the #2 exhaust valve
Adjust the #4 intake valve
Adjust the #6 exhaust valve
Adjust the #6 intake valve
Adjust the #8 intake valve
Adjusting Valves on Chevy
Big Block
and
Small Block Engines
1-8-4-3-6-5-7-2 Firing Order
Helpful Information when adjusting valves
When adjusting valves, always make sure that lifters are primed unless
you are using solid tappets.
Adjust the valve on every cylinder in the sequence above.
Tighten the rocker nut until you feel resistance in the push rod and
can't turn it with your fingers. this is also known as "0 Lash"
then you may tighten the rocker up to 1/4 a turn.

If your tappets are primed, and you have adjusted according to these
instructions, you should be ready to go.