Patent ID: 7617807

Claim:
A multiple cylinder internal combustion engine having a camshaft-driven valvetrain with a camshaft disposed within an engine block, the engine including at least two valves operated by a common camshaft lobe, the engine comprising: a cam follower in contact with the common camshaft lobe and at least two pushrods, each pushrod associated with one of the at least two valves; a first rocker arm associated with a corresponding pushrod and having a first length and a first pivot point defining a first rocker ratio corresponding to distance between an associated pushrod and the first pivot point relative to distance between an associated valve stem and the first pivot point; and a second rocker aim associated with a corresponding pushrod and having a second length and a second pivot point defining a second rocker ratio corresponding to distance between an associated pushrod and the second pivot point relative to distance between an associated valve stem and the second pivot point, wherein the first and second lengths are substantially different and the first and second rocker ratios are substantially identical.