Lee according to my book "Chevy Cowl Tags: 1950-1975" by Mark S. Allen That decodes as:
01A ==========> first week of January date code STyle
1966 =========> 1966 production year (started in August)
16467 ========> V8 Chevrolet Impala two door Convertible
FL2 ==========> Flint Michigan Assembly Plant (2 should be a 1)
423 ==========> Fisher Body Sequence Number TRim
870-A =========> Fawn Colored Vinyl Bench Seat
A -2 ==========> Tuxedo Black Exterior Paint; 2 Black Top
W ===========> Tinted Wind Shield Only
2 ============> Second Option Group Number
S ============> Rear Antenna
R ============> Rear Seat Speaker
Built at the Flint Plant
October 12, 1965
HCH: L30 327/275 HP Powerglide Trans
1966 Impala SS
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Ok, now that the site has decoded my cowl tag and my engine #'s, heres my question. Is it possible to have a car built the first week of October 1965 and a motor that has a code date of October 12, 1965?
1940 Chevrolet Street Rod
1950 Mercury Custom
1966 Impala SS Convertible
Anything is possible. It is possible it went down the assembly line and when they cranked it up at the end of the line to park in the delivery lot the original motor blew up for lack of oil in the pan. Then the factory would have had to rework the car by pulling the original motor out and replacing it with another one off the line.