Cams for 318's

Within the confines of the same duration at .050-inch lift,
the hydraulic roller will allow you shorter seat-to-seat or running duration numbers.
This will buy you some better off-idle throttle response and higher engine vacuum.

Alternatively, you can achieve higher power output if you maintain the seat duration numbers and gain area under the lift curve with more peak lift and greater duration at not only .050-inch, but all the other higher-lift area checkpoints (.100-, .200-, and .300-inch lobe lift) as well.

Nolan Jamora Isky cams
Same O same O with .904 lifter vs 842 cam designs
and inverse radius vs flat flank rollers