Re: Convert to serpentine?
That is the spring loaded belt tensioner. All of the parts are factory GM from late 80's early 90's trucks. 4.3L and small block V8 brackets are the same. Most pull-a-part kind of places don't care what you pull as long as you pay for it.
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All things Chevy truck:
1986 SWB "Jolene" boosted 5.3/4l80e project
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