No sir,It should not be spun to 5800 or above! That little cam will peak at 52-5400 in a 400 inch engine.This shutting down at 4800 sounds like either a fuel problem[running out] or an ignition problem.I have a problem with my 409. At 4800 the engine total shouts down. Is it possible the lifters are bleeding down. I have no revlimeter on petronex two distributor, demon 625. The cam is SC #950 with spring pressure 115 on seat and 325 on opening. Trying to figure why it shout down. The cam should go to 5800 or a little more.
I ran in the low 12 seconds range with a 5/16 fuel line, running through the traps around 6200 RPM.