I love them both
My sons stock crank 360 has gone 6.54 several times with a .620 lift rolller at 3200 pounds

My 408 has gone best of 5.98 but usually 6.03 at app 2830 pounds with a .650 lift roller cam.
Both engines had the same Edelbrock heads, and both were shifted at 6700rpm. I can’t speak for his but my 408 was begging to be shifted higher. Now I’m giving up some ET with my 14-32 slicks compared to his 10 inch radials.