You like machining the tappets instead of using shims, Bucket Shims I think they call them? What Aluminum do you use for your Castings? I also like the Casting method as the machining goes faster, especially if you have alot of mass to deal with. Now before everyone puts their hand up, if you take into account your time spent drawing CAD, developing CAM, 3D printing Molds and Cores, finishing the Molds and Cores, and finally Casting, it certainly is NOT faster. I think the biggest reason I like the Casting method, is that your time is split up between different disciplines. Sitting in front of a Computer, watching a 3D Printer and finally burning your fingers and finally machining your Castings. But it's all so much fun.
Totally enjoying your build. Please keep up the great work.
one remark , don't forget to harden the camshaft lobes , otherwise you will get a lot of wear and tear very quickly and all the debris will end up in your crankcase and oil with the known consequences.also use hardened ( Stubbsteel ) and polished cam follewers
it takes less time to harden the cams than having to dismantle and clean everything after a few minutes of running the engine and make a new hardened camshaft.