What are you looking for in a cam? Something stock like? More lumpy idle?. I read the specs on the Melling cam and it seems small close to the stock cam.
65sporty,The MTD 2 is better than that SPD 11, should idle good and give good torque. It's similar to what some manufactures call a RV cam. The 70 383/335 HP motor uses the same cam as the 440/375 HP it's specs look pretty good nothing too wild should idle good and have good vacuum.