RB series Valve train Designs

[Drift-wood]

I was trying to find out what RB motors have what valve train setups.
Correct me if i'm wrong please.

I think all have Rocker assemble expect for the RB25DET Neo head?
I read that the NEO head is solid lifters.
Which would be like the CA design and the Ka24de design correct?

With all this being said is the NEO head not able to flow as well as the Stock RB25 head?
I read the NEO head was created for fuel economy and had smaller ports I believe.

[SullivanRacing06]

no rb has rocker arms....

dont know where you got this info from

[StricNyne]

NEO and Rb26 of all years have solid lifters, all rb20 and r32,33 rb25 have hydro lifters. lifters really dont have anyting to do with flow, the cams choices change though, not many rb25 options, and how high you can rev, on the hydro lifters i was told the magic number was 8600 but that was a couple years ago and idk if that was pulled from the a** of someone