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Generation III Internal Engine
Comp R lifters question.

Generation III Internal Engine 1997-2006 LS1 | LS6

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Comp R lifters question.

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Feb 19, 2005 | 08:51 AM

#1

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From: Thomson, GA

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Comp R lifters question.

Can they be just torqued down.....or do they require an adjustable rocker arm...??????

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Feb 19, 2005 | 08:54 AM

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Adjustable rocker arm or shim the non adjustables to get the right preload. Do not just torque and go. I did this when I installed them and left a lot of HP on the table. Cam fell of likea rock at 6000. After I had them set right I gained HP and can turn to over 6800 without significant HP loss.

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Feb 19, 2005 | 09:23 AM

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I am fixing to install these lifters next week with the cam and heads, I am going to run patriot shaft mounted rockers, so excuse my ignorance, what is the proper preload,, and how do I know if i have it correct or not? THis is my first cam swap on an ls1 so I'm learning as I go. THanks

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Feb 19, 2005 | 11:54 AM

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.002"-.004" hot..... .008"-.010" cold

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Feb 19, 2005 | 12:16 PM

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To get the right preload it is about 1/5 - 1/4 turn past zero lash.

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Feb 20, 2005 | 09:48 AM

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Exactly what they said!

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