Hello Everyone,
So I have a 2002 5.7, replaced both of my heads since they were cracked (as per machine shop). Heads are new aftermarket heads. After adjusting rocker arms with a technique that had me spinning the motor sever times. The engine wouldnt start and noticed I had no compression.

I Loosened all rockers and tried another valve lash adjusting technique. My compression reading went up but most under 100. I backed off the rocker nut all the way loose on the rocker arm so there would be no pressure on the valves. cylinder compression are 110,120,90,100,70,40,30,80. This is still extremely low. The engine pistons and rings look fine when I removed the heads.

What is going on wrong. Please help/advise
Sincerely,
Fred