tcoupekyle - this is just my general acquired info, all the camshaft companies have a supercharger line and you will notice similar specs. They all promote wider lobe separation angle (LSA) over a NA engine and for those of us that abuse our supercharged engines with higher rpms, you may want more exhaust lift and duration over the intake.
The wider LSA is to minimize overlap measured in degrees. When the intake and exhaust valves are open together (aka the overlap), exhaust back pressure could reduce intake pressure from the supercharger. You will see LSA of 112+ it’s generally recommended not go over 30 degrees of overlap.
The reason supercharger cams typically have more exhaust lift and duration is to more clear the cylinders of exhaust gas to make room for the incoming charge. It’s just makes it more difficult for the supercharger to work with exhaust taking up space in the cylinder. I think (generally) up to 8-10 percent higher exhaust lift and duration over the intake is pretty common now.
If you are going to abuse this 434, you are going to abuse this engine, right : ) as a starting point look for a solid roller cam with LSA over 112 and has more exhaust lift and duration then intake. Alan
p.s. I like Crower cams, Schneider cams, Isky cams and 43 years ago my first racing cam was Lunati.
