Are you installing pedistal or stud mount rockers? Here are a few article to help you.
http://www.cranecams.com/?show=faq&id=3
http://www.flowtechinduction.com/technical.htm
http://www.cranecams.com/?show=faq&id=3
http://www.flowtechinduction.com/technical.htm
They are probably pedestal then, The easiest way to explain it is that the pedestal has the threaded bolt that you screw into the head, the Studs have the threaded bolt protruding from the head.
I think both of the above links are for Stud mount rockers. Here is one for pedestal mount
http://www.cranecams.com/pdf/453e.pdf
I think both of the above links are for Stud mount rockers. Here is one for pedestal mount
http://www.cranecams.com/pdf/453e.pdf
A manual will often tell you which rocker arms you can adjust at #1 TDC compression and again #1 TDC exhaust. On your stock 5.0 heads you should have pedestal rockers which will only need to be torqued down unless you have made some changes. If you have then you will either need shims, different length pushrods or adjustable rockers. When you set them half of them can be adjusted at one position and half again after rotating the crank. If you are tightening them and they suddenly get harder to turn before you get them tight you are probably not at the right crank position and what you are feeling is the resistance of the valve spring as you are slowly opening the valve.