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10.Here's our off-the-shelf cam's specs. It has a 0.510 lift, but that's based on a stock 1.7:1 rocker ratio. If you dived 1.7 into 0.510, you will get 0.300, which is the actual lift on the cam lobe. We used a 1:8.1 rocker, so we multiply the 1.8 by 0.300 and end up with a gross lift of 0.540.