What is the position of the distributor at dead top centre on a 1986 Chevy silverado?

If #1 piston is up on compression (hold finger over plug hole to feel air while bumping starter) put something in and rotate motor so you can tell when piston is at top of stroke. With cap off distributer rotor should point to #1 plug wire. rotate dist. with coil wire off turn over engine and move dist to get it to turn over the fastest. plug in coil wire start and time it.