Roller LA Deck Height

AJ/FormS said
You got the idea!
Just remember; the calculator needs the Intake Closing Angle, calculated off tye ADVERTISED specs. Do NOT use the .050 specs!

Here is what it says right at the top of the calculator;
...............Dynamic Compression Ratio Calculator ...................
(Use seat to seat or advertised specs for Intake spec for best results)

For best results at altitude, To generate a smaller Ica for to trap more mixture in the chamber; I recommend a solid lifter cam, and on a tighter LSA, like 108. Do not try and use a HFT on a 115 ,lol.
The solids will let you run one size bigger cam at the ~same pressure as a HFT. As will a 108 over a 112. So by running a tight LSA, AND a solid, you can run a cam of about two sizes bigger off the after-lash advertised, than you could with a wide-LSA-hydro .
If you get the VP over 140, then you don't have to advance the cam. 140VP is plenty of VP; more just spins tires earlier and easier.

A hydraulic roller, IMO
IMO, is the wrong way to go , at altitude. They make power in the midrange all-rightee, but the Ica runs big very early, leaving you with a weak bottom end, that requires additional stall to overcome..
A solid roller, on the other hand, can be built to have very fast ramps. Faster than a Flat tappet even.

I must be a DA cuz I just can't find anything on the Lunati site anymore.

Their site went to crap a while back. I typically use summits website for the specs on their products, but their cam cards are particularly hard to find. Here’s Summits info for that cam:
Lunati 20200711 Lunati Voodoo Camshafts | Summit Racing

I’ve got the smaller 20200714 I bought on sale a while back while planning to build a roller 318. The 0714 is ground on a 106 intake centerline, which I assume is the same for the 0711. I did use the 270 advertised of the 0711 for my calculations, which gave me a Intake Closing Angle of 61 degrees ABDC.

I think I would like to get them to grind a custom one for me on a 108 or 110LSA, but I like the general specs of the cam.

I’m not sure I understand the whole difference in cylinder pressure, but I assume since the valve is closing faster, it’s valve curtain area is larger later in the closing event, which is bleeding excess cylinder pressure compared to a flat tappet with a lower valve lift at the same angle. I think that argument could be reversed though. A hydraulic roller will move more air than a flat tappet over the same duration numbers. In order to reach the same total airflow, a flat tappet would require longer duration, thus lowering cylinder pressure compared to a shorter duration roller moving the same volume of air.