I had a .480/280 Crane in my 350Pontiac engine in my Suburban and had great power brakes! But, if it were me, i'd try bout a .500 lift/290ish duration hyd in your engine. Im running this type of cam in both my 455's(they both runnin 11 to 1) and they run like crazy up to 5400rpm. U could always advance 2-4 deg if you runnin tall gear.
Your engine will be done by then anyway no matter what cam you put in it, so you might as well build torque, not horsepower. With these cams you get both. 108LSA is in the ballpark, and these cams are absolutely streetable. Use some good oil(Rotella, Amsoil and the like) and you shouldnt have to worry bout wiped lobes if break-in procedure is good. Just my opinion....
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 1968 Firebird 10.817/122.33 3600lbs trw 455, iron d-port heads/SD intake/q-jet, 9" tires 1.440 60ft
1962 Catalina 4100lbs trw 455, iron d-ports,perf RPM, 800holley, 9'' tires,( [email protected])1.578 60' Oct 2010!!
  
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