I may be a little late but I thought I'd post here anyways. How I do it is:
From what I recall the gap (in inches) is between 0.0012-0.0024 on the intake and 0.0018-0.003 on the exhaust (I think I have the intake/exhaust the correct way around). I turned my crank pulley bolt until the rocker arm on #1 cylinder intake was as high as it would go, right before it starts falling and then I set the exhaust gap. Turned the pulley bolt until the Exhaust was as high as it would go and I set the Intake gap. Repeated that for the remaining cylinders.