Help me find the umph in my 360

I bet dollars to doughnuts the camshaft sprocket wasn't bottomed all the way and was wedged on crooked causing the bolts not to bottom properly. I've seen that exact thing happen before. Hopefully, that's the extent of it.
I checked the inside on the spark plug holes and looked at all my pistons with my parascope. There is no nicks from the valves that I saw. So I think I'm fine there.
So I'm starting to add parts to buy from Mancini racing that replaces what has been broken. I do want to go ahead and just spend the money on a new cam that better suites my low compression. So what is a good cam that is great for low compression that keeps vaccum high enough for my power brakes, and has around a 480 lift with keeping the power band from 1300s to 5500 range that better suites my stock converter? I'm allitle iffy on the comp cams with the lifter issues from them.