I do not know the cam but it is likely a billet steel hydraulic roller since it has a bronze alloy gear on the distributor. I tried a number of times to adjust the lifters cold but one or two still sounded loose. The problem went away when the valves were adjusted with the engine running and hot. Two of the lifters on the driver's side adjusted very differently that the other six when adjusting cold. It seems like they were collapsing while the others stayed pumped up. The two mushy lifters seemed fine when the engine was hot and running.
The oil I am running is Castrol GTX 20w50.
Currently the valve train is a little noisy but it may be normal for this type of build. It seems the hydraulic roller cam, roller lifters, thick pushrods, guides plates for the pushrods, roller rockers, and stiff valve springs all add up to some extra clatter. This car is sitting next to a stock and un-rebuilt 1971 Pantera and its valve train noise is starkly quieter.
Here is a short video of the driver's side running with the open valve covers.
