Tick, tick, tick with those TW8 cams. Did I mention tick, tick, tick?
Bobby slams the back door on the 8 cam...which produces valvetrain noise...no way around it.
On a quieter note...Tman 590's, or the Fueling 574's would be a choice of quieter cams that will perform just as well.
I believe BVBOB on the forum here (noted tuner) went from the TW8's to the Tman 590's in his personal bike...he would be a good guy to pm and ask your question which would probably have dyno results on both to compare.
Just my 2 cents...from No Cents
117" Darkhorse build...all smiles!!!