Planning for 408 - Possible Solid Flat Tappet cams

the wider you go the more compression you need
and vice versa
pick the rev range you want
then your powerband
then work from there
most everyone here has autos
4 speeds are different
especially if street driven
work from .006 not .050
what the cam picker is going to do is pick your valve events
but you have to know sorta what works because, as seen in another recent thread, the cam pickers can be way off