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Old 01-05-2008, 08:48 PM
Hogg Hogg is offline
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GM used aluminum full roller tip and roller trunnion 1.6:1 rockers in teh 1996 LT4 engine. The roller trunnion is needed to prevent ball/cup galling above 6000 rpm. The LT4 engine has a fuel shutoff of 6412 rpm.

Even if the geometry is correct, the tip of a rocker does indeed sweep across teh valve stem tip, evr so slightly. Not much at all, but it does, simple geometry/physics.

No need to readjust them.

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