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Can you set the valves(rocker arms) on an ls1 the old Fashioned Way

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Old 03-30-2009, 07:18 PM
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Default Can you set the valves(rocker arms) on an ls1 the old Fashioned Way

Can you set them the way when you loosen them until they clack then tighten them until they stop.. them tighten them a half turn more?????????
Old 03-30-2009, 07:27 PM
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No, these rocker arms get tightened down all the way, with the valve fully closed then torque each one to 22lb ft
Old 03-30-2009, 07:29 PM
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no need to go through all of that. just torque them to 22ft. lbs then turn the engine over by hand and stop and retorque every 90 degrees (you'll ned a 24 mm socket to turn the crank) remove the spark plugs to make it alot easier
Old 03-30-2009, 07:30 PM
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^^^ beat me to it
Old 03-31-2009, 05:24 AM
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That procedure was for stud mounted rockers, where pushrod set preload and wipe pattern and the rocker position was fixed by the valve stem/spring and pushrod. On the LS1, the rockers are fixed fulcrum so the height of the stand relative to the valve stem sets the geometry and the pushrod sets lifter preload. To ensure the rocker is installed correctly, the bolt preload is used, which is set with a torque value. Here is the correct way to install the rockers.





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