I run that cam in my 360 mechanical 6 pack, it's a aggressive cam in a stock stroke, it pulls hard all the way up to 6,800 rpm in my car, I've run 12.20 first and only time out with it. Didn't notice any drop off in performance going from a holley strip dom with 750dp to the machanical 6 pack. I would make sure the outboards are opening and that fuel is coming out of the boosters when they are open. Also check the float levels. 6 packs are not easy to setup especially the vacuum ones. They may not make as much Hp as a single 4 bbl but the cool factor is way higher!!
