From The Office of AKRA, Inc Feburary 12, 2010

After countless hours of testing and conversations with racers, engine builders, and industry leaders. We have decided to add duration checks to the intake and exhaust lobes on the Box Stock cams. This update is effective as of 2-12-2010. This will be in effect for the remainder of the 2010 racing season. If needed for 2011 we will take additional steps to control the integrity of this engine program, just as we did this year when we dropped the maximum running lift on the cam.

Thank You,

Bill McCutcheon
AKRA, Inc

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Camshaft Requirements: add sentence - Duration check for Intake and Exhaust lobes. Intake duration of 218.5 degrees at .050 lift/85.5 degrees at .200 lift. Exhaust duration of 221.5 degrees at .050 lift/96.5 degrees at .200 lift. (All checks will allow +2 degrees for wear and gauge variances.)