LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Dumb Question...What is this???

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Old 04-27-2011, 05:54 PM
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Default Dumb Question...What is this???

What is this hose? Firesuit on!
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Old 04-27-2011, 06:00 PM
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Opti vacuum hose

You can google shbox opti oil hose for more info
Old 04-27-2011, 06:01 PM
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It's the vent for your optispark
Old 04-27-2011, 10:00 PM
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Sidenote: If you are running boost, put a 1 way valve in that line.
Old 04-27-2011, 11:48 PM
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It's a feneuter valve....jk, Its the fresh air side for the vented opti. The other side comes from the opti and goes up to the intake manifold on the drivers side
Old 04-28-2011, 08:47 AM
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Thanks guys. Pulling any and all unnecessary pieces while I am replacing a head gasket and just wasn't positive on that.
Old 04-28-2011, 08:51 AM
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you need to keep that one, you'll see it connected to the opti once you take off the air filter.. btw - you're running 119mph with the stock exhaust manifolds?
Old 04-28-2011, 08:55 AM
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Ya, gonna re route it and try to hide it under neath somewhere.

Negative on stock manifolds. Pacesetter LTs through a 2.5" X-Pipe w/ Bullets.



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