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.

The debate over the optimum rocker arm ratio has dragged on since the invention of the pushrod V-8, but with a series of test we set out to find the best ratio. - Super Chevy Magazine ...

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 ...

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 ...

Can roller rocker arms actually help add horsepower? ... No. 9 NASCAR Chevy Driver Chase Elliott Dodges Wreck, Wins Atlanta: Video . GM myBrand Apps Make Key Update To User Interface ...

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 ...