410 LA small block will not rev past 6000

It says peak 416 hp is at 93.75 mph and from what I can tell tq is about 440 lbs-ft @ 93.75 mph.

416 hp x 5252 / 440 tq = 4966 rpms. 360 hp x 5252 / 475 tq = 3980 rpm, 400 hp x 5252 / 360 tq = 5836 rpm.

So 416 hp @ 4966 rpms, 475 tq @ 3980 rpm and power falls off at 5836 rpm. If I'm reading the # right.

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