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Choosing an intake manifold gasket

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Old Oct 8, 2011 | 6:43 PM
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tssiTanker's Avatar
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Default Choosing an intake manifold gasket

I was just wondering, but ?why? do the intake manifold gasket kits that come with the end rail seal say that they are: not street legal.

Felpro/Intake Manifold Gasket (1266) | 1992 Buick Roadmaster 8 Cylinders 7 5.7L TBI OHV | AutoZone.com



The one that doesn't come with them don't say anything about being not street legal.

Felpro/Intake Manifold Gasket (MS93317) | 1992 Buick Roadmaster 8 Cylinders 7 5.7L TBI OHV | AutoZone.com


It looks like the first one the rear coolant ports or open, but on the 2nd one they are blocked off.

Why is this?

Thanks for the help.
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