In 1970 I had AAR cuda that 6 pk saw 8000 all the time, I was 18 yrs old. Now my understanding of the stroker motor is they make there hp at a lot less rpm. I would have though 5000 would be it on your motor. Just my 2 cents.
My stroked 340 pulls to 7k, limiter at 7200.
But as mentioned previously the Valvetrain and cam are the deciding factors, not the crank and stroke(although a tad).
I wouldn't sixpack anything that I wanted peak performance from. Bottom line is buy a good 4 barrel intake matched to heads with a quality 750DP and tuning will be a breeze. I find sixpacks to be a factory gimmick. Power was so low back then they could have a shitty tune but no one cared be cause they had a "SIX PACK". I don't know of a single car owner looking for max performance running a sixpack setup. My $.02
