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Old 10-13-2002, 07:02 PM
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Post 3.8 V6 Engines

Can anybody here tell me if a olds,buick,chevy,pontiac 3.8 V6 in 88 or newer vehicles are the same as in interchangeable. If not are the blocks the same? Thanks, Jay

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Old 10-14-2002, 03:48 PM
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I think they are all derived from the Buick 3.8 and are virtually the same. There is possibly some differences between front and rear drive versions.
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Old 10-14-2002, 06:35 PM
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there are at least six or more different revisions to the 3.8 heads many are not interchangable especially into the ninties where the only thing different is a hole that you must have on one but not on the other, call a good machine shop and tell them your casting nos and find out what fits what if you can't e-mail me and i'll get the info for you- many of the changes look like they were made to justify the existance of the engineering dept.
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