Hi,
If the rocker assemblies are removed, you can turn the cams or the crank independently. As far as the harmonic balancer/crank pulley, I don't believe there is a mark on it. Check to see if there is a small V cut out of the pulley. If there is, then check to see if there is an indicator on the timing cover. If both are missing, it needs to be removed.
All you need is a standard wheel puller. Most parts stores will lend one to you.
I attached the directions below for the removal of the pulley.
Let me know if this helps or if you have other questions.
Take care,
Joe
See pics below.
Images (Click to make bigger)
Saturday, October 16th, 2021 AT 8:42 PM