Re: NOS 1971 Z/28 fuel pump
That's Chevrolet #6470423...aka AC #40726.
These are fairly common.I just sold two NOS for $50ea.
It's the same pump shared on the line by a multitude of Chevrolet & GMC 2bbl.& 4bbl. Small block Cars & Trucks beginning in 1970 as well as the years after it.It was soon superseded by Chevrolet #6470779 sometime during 1974-5,but still went by #40726 to AC.
AC soon superseded their number to reflect AC #40987 sometime before 1980.
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