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All we have to do to determine intake centerline is add the two numbers together and divide by 2. So adding 65 + 149 = 214/2 = 107 degrees ATDC for the intake centerline. Looking back at installing the crankshaft sprocket, we advanced the cam 2 degrees, which is what we now have. So by resetting the crank sprocket at 0 (retarding the cam 2 degrees), the intake centerline will be a true 109 degrees ATDC.