Low load will not seat the rings effectively. You need high cylinder pressures to do that. Like Supe says, "drive it like you stole it". And yes, absolutely, vary the revs as much as possible. Engine braking from high revs help seat the rings as well. On the gas hard, off the gas. Don't baby it, but don't abuse it either.
Initial start-up with new cams and rockers (or lifters) is very important as well. The mating faces need to be burnished in to one another. Low revs kill cams on initial start-up, so keep it spinning at at least 3,000 rpm or so for ten to fifteen minutes. Do this stationary, without driving it, because if you drive it, the revs will need to drop at various points along your drive.
Back to the video - never saw the point in displays like this. O.k., it has lots of power. Good for him. Many cars do. Let's see him really
drive this contraption, on the drag strip (the only place it has any hope) and see what he can do. Oh, and paint your goddamned truck - the rat rod b.s. has worn out its welcome.
While you're at it, get off my lawn...
