Personally I would think the 270H would be better for the street with a broad power band.
That 292H would be winding the piss out of the motor unless you've done alot of work
to the bottom end of your motor. If the bottom end is close to stock. I would go with the
270H. If you didn't put in stronger rod bolts with some partially grooved clevite
bearings and balancing I would go with the smaller cam. Otherwise I think your
looking for trouble in the not to distant future.
Kurt