[Corts60]

Any brand new engine should be pre-lubed by a drill using and old distributor shaft. Those first few seconds of an engines life are the most important. And, naturally, if you've pre-lubed the engine properly, that means the hydraulic lifters are now pumped up with oil. Now go through and set your valve lash to zero and then go no more than 1/2 turn. 1/8 turn if the engine constantly sees high RPM's (like Marine engines). 1 full turn is too tight and will burn valves and destroy camshafts. Also, if you are breaking in a new cam I hope you poured in the zinc additive or there is a good chance you can kiss that cam goodbye.

And I have found that this procedure for adjusting valves is far less confusing to follow and works on every single engine:

When exhaust valve starts to open, SET INTAKE on same cylinder
When intake valve starts to close, SET EXHAUST on same cylinder

Works every time and I have never had to go back and re-adjust my valves on a new engine.