My apologies to the op for my statement about the noise level of the roller rockers. They do NOT sound like a finely tuned sewing machine. And you are also correct about your statement:

Quote:
"As to "loud", when it comes to valve train noise the level of noise is relative to the individual"

I , also, have been around hot rods for quite a number of years & am very well aware of excess noise , high performance parts can generate. "You don't get something for nothing."

This statement by you "Roller rockers are noisier than "normal" rockers" is also a broad generalization . They may be in your case, but with the parts the op listed , I know from experience, & still stand by my original statement that the S&S roller rocker arms, used with a high lift cam, are NO noisier than a EV-13 with stock rocker arms. I have used, both set-ups.
Having said that , here's a short video of my bike , made about a month ago. S&S roller rocker arms, V-Thunder EVL-5005, .569 lift cam, S&S Replacement heads, .020 forged Wiseco pistons, with static compression about 9.21:1. You will hear a faint metalic rattle in the video, but that's just one of the connections in the Vance & Hines exhaust I have not tightened up.




So, in summing it up:
Will there be noise if the op adds roller rocker arms? Sure as hell will.
Will it be noisier than stock? I don't think so.
Are they worth the extra cost? Only the op can decide that.
One other note to the op: If you do install the roller rockers, you WILL have to clearance your stock covers.
Also your comparing a highly modified twinkie to a more subtle evo motor, broad generalization.

Ride Safe,
Harold

 

I could be wrong but I dont think these roller rockers are loud .