3800 Series II Supercharged (L67) Question
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3800 Series II Supercharged (L67) Question
Hello all. I've been looking into buying something with a Buick 3800 engine in it so I've been doing some research and have read that the NA Series II upper intake manifold is plastic and degrades around the EGR passage and can cause coolant to dump into the engine. I'm assuming that since the Supercharged Series II (L67) has the supercharger in place of the UIM that means it doesn't have this same issue? Are there any issues with the Series II Supercharged 3800 that are unique to it? Does the supercharged engine still have the lower intake manifold gasket issues like the NA engine does?
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