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Generation III Internal Engine 1997-2006 LS1 | LS6
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What spring is ET using for the 'SR' upgrade?

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Old 04-10-2006, 11:20 AM
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Default What spring is ET using for the 'SR' upgrade?
Looks from a SDPC post that the HR .650 lift option is the comp 977

what about the SR (stg 3) option?
Last edited by Fireball; 04-10-2006 at 11:30 AM.
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Old 04-10-2006, 11:43 AM
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From what i know they use psi springs for solid roller.Thats what they call them i never heard of them but they say its a good spring.
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Old 04-10-2006, 02:08 PM
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PSI 1224 ~200 on the seat and ~700 over the nose.
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Old 04-10-2006, 02:20 PM
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How are they using a Comp 977 for HR at .650 when they are only supposed to be good for .600 lift
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