Then we switched to Comp Cams Magnum roller-tip chrome-moly rocker arms with a true 1.52:1 ratio. Last, we tried Comp's full roller Hi Tech stainless steel rocker arms in both 1.5:1 and 1.6:1 ratios.

Now consider an aftermarket roller rocker arm with a 1.6:1 ratio. ... The ubiquitous small-block Chevy V8, for example, has 16 rocker arms.

A roller-tipped rocker is not necessarily a roller rocker (as is the case with the Competition Cams rocker,second from left). See All 9 Photos Rocker arms are often mounted on a common shaft ...

In this article we provide Corvette enthusiasts with everything they need to know about rocker arms and Small Block Chevy valvetrain tech prior to modifying their Chevrolet Corvettes - Vette Magazine ...

Video: Do Roller Rocker Arms Actually Make A Difference? By Francisco Cruz. January 25, 2018 9:08 am . ... The old Chevrolet W series motors are starting to be the thing!

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.

There are several types of stud-mounted rocker arms in this example for the small-block Chevy. From left to right they are: a stock stamped steel rocker arm, a Competition Cams cast rocker with a ...

Chevy has created some monstrous engines in its history, ... actuated by forged aluminum roller-style rocker arms, ... and 1.880-inch exhaust valve diameters and use the same rocker arms.

Chevrolet's Performance division has launched a new ... as well as investment-cast roller trunnion rocker arms. Chevrolet Performance recommends 91-octane premium unleaded at the very least ...