340 or 408?

I have raced and street driven 350 chevy, and 406. I reved the pee out of the 350, It probably would have been faster, shifting it sooner
The 406 would rev just as fast as the 350, but it was completely unnecessary.
The 406 ran nines/low tens n/a, shifting at 6200. It would go to 7500, just like the 350, but there was NO REASON to.