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Ship, thanks for the link to the article about the 3.9. It was the best at explaining differences in the 3.8 and 3.9 I've seem so far but I'm still a little confused as to why they built the 3.9. I'm still trying to decide if it's an oddball engine which I wouldn't want. I'll go see my buddy Doug that has worked in an automotive machine shop that his father started all his life. I'll bet he will know what the deal is on the 3.9 and if it's an engine to avoid.

I read that article a couple of times and couldn't really get a handle on what that engine is, so I looked on a couple of forums and it appears it is a slightly stroked 3.8 liter engine. The introduction of the text about the European 60* design kind of confused me. That would be like the engines in the Mercury Capri and others, and somewhat similar to the GM 60* V6's, like the 2.8 and 3.1 in lots of small GM cars in the 90's. Even though the Buick 3800 is a 90* V6, it uses the bellhousing pattern of the 60* V6's for a bolt in swap into things like the Fiero and even some older Jeeps. Good looking car with infinite headroom when needed🙂