BCNUL8R

iTrader: (2)

How far do you trust them as far as rpm and power level?

KCS

iTrader: (20)

I've seen them come out of a 900whp turbo engine looking band new, so I wouldn't be afraid to push them with boost. Not sure about RPM though, but as long as the clearances are adequate and the pistons aren't crazy heavy, I'd turn them 7500RPM without worry.

blk99camaro

iTrader: (9)

FWIW, my old 404ci had scat H-beams with 8740's and I turned that thing 7400 rpm with no issue. Cannot comment on the I-beams though.