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14. With our turbo testing out of the way, we turned our attention to the making more normally aspirated power. To that end, we stepped up to the Stage 3 cams from Comp cams. The Stage 3 NA cams offered an additional eight degrees of duration (up from 228/231 to 236/239 degrees) compared to the Stage 2 cams tested previously. The lift values remained unchanged with a 0.492/0.453 lift split.