Just my 2 bits.........
I was able to score a bunch of really good parts from a local fellow that built a nice 428. He wiped the cam in 16 miles after doing the 1,500 - 2,500 rpm thing for 30 minutes. He didn't take any springs out (they were E'brocks which have rather stiff springs out of the box), he didn't use any EOS or other additive. Not sure what
oil he was using but, when he was done, his block was toast. He sold the roller, I bought the heads, roller rockers and numerous other hardly used bits. Good for me, bad for him.
The lesson is........people on this forum have a lot of knowledge, a lot of it learned the hard way. I'm building my motor now and I'll be doing what they say.
If you want a bottle of EOS, I'll sell you one. I won't gouge you either. I have more than I need for my engine and I'm using a hyd. roller cam anyway.
PM me if you want it.
Paul