I have a 471 blower on a 302 GMC. Previous owner says it could use a custom grind on the cam. Looking for suggestions. Engine will be street driven 4500 MAX RPM. Static compression ratio is 7.8-1. Blower will run 1 : 1 or even 5% under giving max boost at 4 to 5 lbs. Should be about 10.25 to one compression ratio at max rpm. Any ideas?