Cam for low compression 360

Sounds like a Comp Cams XE262 might be a good one for you. Or if you prefer Lunati the 60401lk would be great too. Both will work fine with the low compression so you still have good bottom end torque and will give a nice gain in upper rpm hp. I don't think either will have much "bumpity" sound though. Probably just barely be able to tell it's there. To get the bumpity sound you need to get a cam with more overlap and doing that will hurt bottom end power.