Re: 71 BB Fan Clutch Restoration/Cleaning
Jack-----
Note the date of the change for the fan clutch. I don't think the 3937771 ever got into PRODUCTION for the 1971 model year.
I don't think that the 3916139 was ever used for 1971 small blocks, either, although the AIM shows that number and no supercessive number, at all. The small block also shows the GM #3888366 fan blade assembly being used but I don't think the 3888366 fan blade was even still being manufactured at the outset of the 1971 model year.
Jack-----
Note the date of the change for the fan clutch. I don't think the 3937771 ever got into PRODUCTION for the 1971 model year.
I don't think that the 3916139 was ever used for 1971 small blocks, either, although the AIM shows that number and no supercessive number, at all. The small block also shows the GM #3888366 fan blade assembly being used but I don't think the 3888366 fan blade was even still being manufactured at the outset of the 1971 model year.
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