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Generation III Internal Engine 1997-2006 LS1 | LS6
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SFI crank pulley?

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Old 04-19-2010, 11:55 AM
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Default SFI crank pulley?
What does this do and is it worth it?
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Old 04-19-2010, 12:08 PM
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Got a pic, or a link to where we can see/read about it?
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Old 04-19-2010, 03:23 PM
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SFI is just a rating used to indicate whether or not a part is good enough to use on a racecar.

SFI ratings are only good to certain ET's.

If your looking for an underdrive pulley, just look at ones like powerbond,SLP,etc.
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