2G What are good cams and valves

[bmw335ikt]

Hello I'm looking for cams and valves for my street build. I'm going to run fp 68hta and its for a street build I was looking at the kelford 272/272. Also what are good valves. I have the ferrea dual spring kit.
Also what does speed density do. alow you to run from recirculated to be able to run vented to the atmosphere?

Thanks

 

[PrimerPLus]

Hello, well it all depends really. Personally I have a set of the DKS Delta 272's They are Regrinds and copied after the HKS 272 cams.
Valves are kind of personal choice, I would be interested in Manley, or Ferrea.
Speed Density: http://www.ecmtuning.com/wiki/sd101
"he term “Speed Density” typically refers to the operation of an engine using an estimation of airflow based on pressure, temperature and some idea of the engine's volumetric efficiency"

Yes you can vent to atmosphere if you run Speed Density