Putting a new cam in my 360

Lustle said
Use the assembly lube. Coat it. Thick. Run at varying rpms at 2000+ for at least 20 minutes. Don't just leave it at exactly 2000. Move it around. Gotta mate those lifters.

Thanks for that. RPM varied for sure, but the lack of high-viscosity assembly lube is what caused the issue I think.