Right? But even the HS that were commonly used back in the day on that cam were close to 1.54RR (which yielded closer to 1.5 in NET) and they worked decent with the Isky 8005. But we all see the actual ratios vary significantly on different rockers. But all these reasons show the OP how this really isn't a no-brainer drop-in and go swap. With the small heads and big cam it'll still peak HP low, I'd guess around 6000 depending on the intake. So being it can 'trap' around 6500 it should be pretty stable IMO.
