There are two black fan styles... one black fan with the corners knocked off the fan (45 deg angle cut) and the other black fan with squared corners (like the white fan)
Going through this with my 71 corvette and my brother's 73 Z28 /73 L82 vette --
My 71 has white opaque... I was looking at a 72 which had 72 pumps had black fans with SQUARED ENDS.
I recently purchased a set off off a early 72 Chevrolet Pickup and the pump is dated 30112S (301st day 1971) and it has a white fan... would be interesting to know the swap over time frame when they changed the smog pump fan.
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~JAG~
NCRS#65120
68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car
#21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built.
71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist.
NUMEROUS Lemans blue Camaros,
Monza Red and Daytona Yellow Corvettes
& a Chevelle or two...
Survivors, restored cars, & other photos
https://picasaweb.google.com/lh/myphotos
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