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03. To hop up our 330hp test engine I used a Comp Cams hydraulic roller camshaft (part number 08-423-8) with new Comp Cams hydraulic roller lifters. The cam specs out at 224 intake and 230 exhaust at .050 of lift. Comp advertises that this cam has a great powerband at 1,900-5,600 rpm and that is just perfect for our mild street engine.