Cams for 318's

remember a 268 MP cam has similar seat durations to a 275 comp (@.006) or 280 crane (@.004)
what compression does a 275ish comp want?
you can see the durations of the stock 340 cam in an above post at .004 and .006
the summit cam is @.004 and is an oldie but goodie chevy grind
with similar durations a mopar lobe will have more area under the curve
and a mopar lobe can have less "intensity" than a chevy lobe as it has more lifter face to work with even if not as radical (the Harold Berkshire 268 comp pushes the envelope for a chevy lifter)