hi to all....can any one help me out with this camshaft sealed power speed pro cs-1043m? whats its rpm range..and is it worth keeping...i have a 1982 carver santa cruz 2667, , 5400lbs,,,alpha 1 gen1... And a new engine i just installed 350 sbc 5.7 bored.30 over, ,,thunderbolt iv ignition,,,new...