GM's LS-series engines are the latest to gain the benefits of Crane's highly acclaimed Pro Series Shaft-Mount Rocker Arm system. Testing has shown Crane rockers to out-perform competitive shaft-mount system.
GM's LS-series engines are the latest to gain the benefits of Crane's highly acclaimed Pro Series Shaft-Mount Rocker Arm system. Testing has shown Crane rockers to out-perform competitive shaft-mount systems for a number of key reasons.
First, Poly-Matrix composite bearings are employed to reduce friction. Unlike needle bearings, which change directions on every cycle and ultimately "flat spot" from uneven loading, the composite bearings "float" on a firm of oil. Because they're much thinner than needle bearings, the shaft can be made substantially larger providing extra high RPM stability and eliminating nosewheel "chatter." Finally, their design incorporates Crane's exclusive Quick-Lift technology, wherein a 1.7 rocker arm initially opens at a rate of 1.82, which accelerates valve opening for better cylinder filling. It "normalizes at 1.7 around mid-lift.
These rocker arms are manufactured from a special premium alloy that maintains superior strength at high operating temperatures and finished with the Mikronite process for extra strength and to eliminate stress risers. The rocker shaft is also Mikronite finished, further reducing friction, and the system is of a full-oiling design.
Where to Buy:
Crane Cams
www.CraneCams.com
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