C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Lt4 vacuum hose

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Old Oct 10, 2016 | 07:14 PM
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Default Lt4 vacuum hose

Anyone know where this goes? I just got this project lt4 I'm looking for a FSM now
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Old Oct 10, 2016 | 07:30 PM
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Fairly certain that is the optispark vent
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Old Oct 10, 2016 | 07:33 PM
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X2.
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Old Oct 10, 2016 | 07:35 PM
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Thanks!
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Old Oct 10, 2016 | 07:53 PM
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Looks like someone has been digging around in the engine bay and my guess is it wasn't you. Looks like a bull in a china shop.

That MAF isn't factory and since the opti vent is unplugged we can only assume either the water pump or opti or both were replaced as well.
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Old Oct 13, 2016 | 10:35 PM
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Originally Posted by kg4fku
Looks like someone has been digging around in the engine bay and my guess is it wasn't you. Looks like a bull in a china shop.

That MAF isn't factory and since the opti vent is unplugged we can only assume either the water pump or opti or both were replaced as well.
Very observant! The person who sold this to me said the opti was changed!

looking at the water pump that looks newish also. The hoses look new and yes that MAF looks new! I need to do more verification. "Trust but Verify"
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Old Oct 14, 2016 | 12:16 AM
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Originally Posted by Indio Monk
Very observant! The person who sold this to me said the opti was changed!

looking at the water pump that looks newish also. The hoses look new and yes that MAF looks new! I need to do more verification. "Trust but Verify"

I like the fact that OE hoses were used, there is no better fit for Corvette than OEM. Just shows whoever did the work at least cared enough to buy quality parts. It is a must for some applications.
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