L72 COPO production was buried in the Tailfins & Bowties data. The data was obtained directly from Chevrolet in the ‘80s and reprinted in the book. All of the oft-repeated ’69 Camaro production numbers-3,675 Z11s, 20,302 Z/28s-came from this data.
The data lists 1969 Camaro production by engine size; 230, 250, 327 et cetera. No 427 engine is listed but the figures total 243,085, same as 1969 production. COPO 9560 [ZL1] & 9561 [L72] build records always list L78 for some reason but not Z27 [Camaro SS].
Ergo, both COPO 427 options are included in the L78 totals.
The L48 [300/350] was the standard Camaro SS engine; 22,339 built. Camaro SS optional 396 engines; 13,659 built. Data shows 34,932 Camaro SS produced. Adding L48 and 396 totals, 22,339 + 13,659 = 35,998.
That’s 1,066 more than Camaro SS.
There were 69 COPO 9560 Camaros built; 1,066 – 69 = 997 COPO 9561 cars.
That means the L78 total of 4,889 is inflated. Actual L78 production would be 3,823.
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