Here's a quick update. As Jeff mentioned I brought in a CNC lathe because pricing on all the lathe parts that I need for the rocker arms would have made the rocker setup prohibitively expensive. It seems everyone is really busy right now, so pricing for small quantities like mine has gone way up. Machining bronze bushing and roller tips is not exactly rocket science, so in order to maintain reasonable pricing on the parts I'm going to do those myself. I got a screaming deal on a used CNC lathe, which also helps
First batch of cylinder head castings is supposed to be poured the first week in May. First batch of the intake adapters is supposed to be poured by the end of May. The permanent tooling for the rocker arm castings is almost done, according to the investment casting foundry, so I'd expect to have the first samples by the end of this month, and hopefully the production quantity of rockers shortly thereafter.
I also have a couple of new intake manifolds designed, but my 3D printer has been acting up for the last month, and I still don't have it working properly, so the new intakes haven't been printed yet. At this point I only have the one that can be tested.
All this has kept me extremely busy, and off the dyno, unfortunately. I still have not dynoed the crossram intake, which I'm really looking forward to. Hopefully soon...