What camshaft spec for 425 hp

Yep. You may be waiting on a cam for months.
Ok, that’s important info. I talked to isky cams and a tech person told me for my combination I would need 230-235 duration at .050 and . 515- 525 lift, on a 107 lobe center. And should put me at about 400+ Hp. That would be a custom grind, isky is right here in So Cali.