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For a 408, yes it is. However, there are street roller grinds around that duration that aren't that hard on lifters/springs. It all depends on what the duration at .200" lift and the advertised durations are.
Comp's street roller grinds have about 38-42 degrees between advertised duration and .050" duration, which isn't bad for a solid roller. They also have less duration at .200".
You can run these cams without wild spring pressures and I wouldn't care a bit to run one in a street car.
Comp also has some wilder lobes (take the TK lobe for instance) with around 28° difference between .050" and advertised durations. They also spend a lot of time with the valve open and then open/set it down fast/hard.
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