Just out of curosity, have you had a 4" or bigger stroker small block?
for some reason it seems a lot of guys think these strokers are dump truck engines. My experience has been just the opposite. Both of mine have revved very quick.
Lots of them. Takes a lot of cylinder head and cam to get the power curve where I want it.
For me, making 550-560 HP at 5400 isn't where it's at. You could either reduce the stroke some and move the power curve up and make more power, or, you have to get the heads and cam timing up to where most guys would snivel about it.