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Generation III Internal Engine 1997-2006 LS1 | LS6
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Who is running Comp 918's with 1.8 rockers?

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Old 12-05-2005, 11:24 AM
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Default Who is running Comp 918's with 1.8 rockers?
I am trying to get a feel for the RPM potential of the Comp 918's with 1.8 rockers. Their accelerated mass should be lower than a dual spring setup. What is your RPM capability?
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Old 12-05-2005, 11:27 AM
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I've taken those on .610 lifts till 7200 rpms (shimmed for .100 of coilbind)
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Old 12-05-2005, 03:35 PM
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With 1.8's or with stock rockers?
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Old 12-05-2005, 11:08 PM
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i run the 918's with the crane 1.8's. i don't even get close to 7200, more like 6000 at the most. no problems so far.
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Old 12-06-2005, 06:34 AM
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With 1.7's but the point is that those springs will handle those lifts easy and if lifts go close to or over .600 to shim them.
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Old 12-06-2005, 09:18 AM
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https://ls1tech.com/forums/generation-iii-internal-engine/418793-increasing-valve-lift.html

haven't tested the RPM limit.
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Old 12-07-2005, 07:29 AM
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Originally Posted by Okie5.3
i run the 918's with the crane 1.8's. i don't even get close to 7200, more like 6000 at the most. no problems so far.
Any dyno curve? I am trying to guage the reduced spring mass effect on the rocker ratio increase as compared to a dual spring arrangement.
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