440 stealth heads and roller cam

anyone use the stock china valves in stealth heads with roller cam,should i get ferrea 6000 series valves(done that in all my steel heads)?will be using 1.5 harland sharp roller rockers also.

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anyone use the stock china valves in stealth heads with roller cam,should i get ferrea 6000 series valves(done that in all my steel heads)?will be using 1.5 harland sharp roller rockers also.

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I think you already know the answer..China and 500 plus lbs of spring pressure...