For instance, a typical small-block Chevy like the much-maligned 305 has a stock rocker arm ratio of 1.5:1. A cam lobe with 0.3 inches of lift multiplied by 1.5 equals a valve lift of 0.45 inches.

Roller rocker arms actuate the valves, and hydraulic lash adjusters manage valve clearance automatically. The intake manifold on the 2GR-FE is made of plastic and includes a variable geometry design.

Manley is adding another valvetrain product to its lineup with the Pro Series Billet Aluminum Rocker Arms. These rocker arms have been put through a rigorous development and design process to ensure ...

To enhance the performance of our 1965 Mustang’s 289-cube small-block, we recently added a Holley Sniper 2 fuel-injection setup and a Powermaster one-wire alternator. To increase its performance, we ...