These were an Atkinson Cycle type cam, different than mileage cams. These apparently were not well received as they did not stick around for long. Problem was the tune also required modification and off idle torque suffered a bit. Now if building an engine for that cam, higher static compression could be used. At low RPM the dynamic compression bled of cylinder pressure but as the intake charge momentum picked up with RPM the static compression was more evident. I can not remember the intake duration and LCA specs but seem to recall a longer duration intake lobe, something along the lines of 10° to 15° more than the exhaust. Intake opening was close to the same as a regular cam but the closing was later.
