Drive train for overhead cam engine

An overhead cam engine, comprising:

• a crankshaft driven by a piston and connecting rod assembly, said piston reciprocating in a cylinder block connected to a cylinder head;
• a drive gear mounted to said crankshaft;
• an intermediate gear driven by said drive gear;
• a cam gear driven by said intermediate gear, said cam gear rotatably supported in said cylinder head and disposed adjacent a side of said head, said cam gear having gear teeth around an outer periphery thereof and a cam profile surface disposed around an inner periphery thereof;
• and
• a pair of rocker arms rotatably mounted in said cylinder head for actuating a pair of valves, said rocker arms each including a cam follower in engagement with said cam profile surface.

An overhead cam engine, comprising:

• a crankshaft driven by a piston and connecting rod assembly, said piston reciprocating in a cylinder block adjacent a cylinder head;
• a cam gear mounted for rotation in said cylinder head in a timed driven relationship with said crankshaft, said cam gear having gear teeth around an outer periphery thereof and a cam profile surface around an inner periphery thereof;
• a pair of rocker arms rotatably mounted in said cylinder head, said rocker arms actuating intake and exhaust valves in said cylinder head;
• and
• a cam follower arm extending from each of said rocker arms, said cam follower arms disposed perpendicular to said cam gear and engaging said cam profile surface.