Most people on here and other forums recommend the latest wiz-bang cams after never having run one in the OP's combination or similar. Reliably pepping-up a low compression 318 isn't child's play. Having ran the 272 Energizer, .454" lift, 110*LSA in my personal '86 D-250 3/4 ton (heavy-5,000lb) truck with a 727 trans and 31.5x16 tires and 3.55 gears, I can testify that it sounded serious and responded from an idle well enough to tow a loaded car trailer (6000+lb) from a dead stop and cruise as fast as you dared on the interstate. My business partner has a '76 D-300 dually with a warmed up 440 and 4.10s and he was impressed. If you have an A-body and use the same setup with say, 3.23 gears and a 11" torque converter with maybe 2200 stall, that Summit cam would be cheap bliss in my opinion, without noisy valvetrain sounds and minimum companion items to make it work.