Cams for 318's
yy1 your post 51
for shelf
the shortest Voodoo or Howard or 248 Direct connection
The comps and crane and cam dynamics do not come close (lift (area)to duration (intake closed) ratios)
most others would be custom and would be better
best is jones hyd shortest actually seat to seat and around .450 lift which is all stock heads can do anyway
in laymans terms it builds the most actual compression