Timing Belt

I was looking at the procedures for replacing the timing belt on on my 86NT.
Do I really have to take the rocker cover off and loosen the cam in order to get the job done. That would involve a lot more work with the addition of more gaskets and time since the intake has to come off. Which is a real pain in the A**/Butt.

I know it has been several months since this was posted, but I did my old 85 Z31's belt without messing with the rockers. It took a few tries to get it in time, but I still see it driving around town from time to time and I changed the belt about a year ago. It ran fine when I sold it.