340 stroker

It seems a lot of people here have the misconception that engines with 4" and bigger cranks won't or don't like to rev or that they are slow to rev.

My 408 was very quick, it was fastest shifting at 6400 because it was running out of head flow, it had the cam and everything else was there it was just running out of air.

The 434 currently in the car has a 4.125" stroke and it revs every bit as quick as the 408 did. This engine made peak power at 6750. I don't have the chassis sorted out yet to be able to find what it likes best, but will hazard to guess it'll be over 7000 when everything is fine tuned.
Agreed, they will rpm with heads that support the cubic inches. The fact of the matter is many people are building these strokers with production heads in some form or another. These engines go soft over 5500rpm. Then their lack of RPM capability is not a misconception.
What heads are you running? Indy or W5? I suspect something quite large to support the 4.125" stroke.