The present invention, however, is not limited to rocker arm assemblies formed from aluminum ; rather, it is contemplated that other materials including but not limited to steel and alloys of the same may be cast or forged to form the rocker arm assemblies 25 and 26. [0111] The rocker arm assemblies 25 and 26 are rotatably mounted on a rocker arm support axle 28 in a position between the intake an