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Determine Build Date

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Old Aug 8, 2007 | 01:17 PM
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Default Determine Build Date

I have a 94 LT1. I was under the understanding that the 94 still had the original, typically called "unvented" Opti dist. I've seem on other sites that the change from Opti I to the vented Opti II was a midyear 1994 change. Can anyone confirm this? If so, how can I determine the build date on my car and could anyone guess how a 94 owner would easily see which Opti they have?

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Old Aug 8, 2007 | 05:59 PM
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Originally Posted by black_771
I have a 94 LT1. I was under the understanding that the 94 still had the original, typically called "unvented" Opti dist. I've seem on other sites that the change from Opti I to the vented Opti II was a midyear 1994 change. Can anyone confirm this? If so, how can I determine the build date on my car and could anyone guess how a 94 owner would easily see which Opti they have?

Thanks
Take a look at your opti below your throttle body behind the water pump. If it has a thin black air line running from the opti up to the air intake just in front of the throttle body on the drivers' side it is a later vented version. You could have an aftermarket opti, often you can't tell without taking out the water pump and examing it.
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Old Aug 9, 2007 | 07:00 AM
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A "rough" build date (month and year) is printed on the tag on the trailing edge of the drivers door. I've heard the story of the mid year Opti change over too, but so far have never seen a 94 with the new style. As 96polovette indicated visual inspection is the only sure way to know.
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