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I would say they are the same. That said, I will never use one again. When I built my 416 put one in it. Used a 590 solid cam with springs set @ 185 on the seat and 380 open.
Lost the cam with just over 200 runs on the motor. When we rebuilt the cam bearings were wore smooth out. The front being the worst. JMO





IMO more trouble than they are worth.