Cam intake closing importance

That 284/528 solid-lifter cam is about as big as anybody would ever want to run on the street and works great with matching compression and a manual trans. But on the street, with a 2.45 low gear and 28"tires, and 3.91s, Ima thinking that cam is not gonna like just 3200TC, but I guess we'll see, it kindof depends on your driving style and final Dcr.
I said your aluminum heads could run all day on 185psi, and that's true; But you don't have to run 185. You can run less, even down to iron compatible numbers. BUT it is my opinion that since they will run up there, and you spent a good bit of cash to get them,why settle for also-rans at 160psi, you can run iron on that. So you might as well get the most bang for your buck, and crank it up. The thing is; yur gonna need new pistons no matter what, so again, shoot for the 11.8Scr with your 72* ICA. But if your Ica is not 72*, then you gotta recalculate the Scr. Those two are practically married.or if you advance/retard that cam, you have to think about the consequences.

If you didn't already have the aluminum heads, there is no way you could run 185psi, and so then there is no way you could target 11.8 Scr. Yeah, it seems you can run more, there are a couple to several guys here on Fabo claiming 200psi, and i have no problem believing that, because my 367 has run on 87E10gas at up to 185psi, and full timing, at full load; indicating that I have at least two grades better gas ahead of me and that suggests 195 right away, with headroom.
Everything is all tied together.
If down the road you don't like that 284 cam and want to go smaller, well if you decrease the Ica to get there, the intake will close earlier, traping more mixture and the Cylinder pressure will rise and if you're not careful ,then you could get into detonation, So again,on this edgy combo, once all your parameters are chosen, they are more or less written in stone. You can go to a bigger cam with a later Ica, that will work... but you'll give up pressure. And if you think about it pressure is power. We pressurize the mixture, lite it off, and that multiplies the pressure. Then that pressure is applied to the crank and finally to the tires.
Everything is all tied together, and in this case, once you have made it into a race engine,like we're doing, there is never such a thing as just putting a smaller cam in it for street......unless you re-engineer the combo.