General Motors option code

L74

L74: a General Motors factory option code reused for more than one part across 1963–1965 and 4 models — see the table for what it named each year, with installs and price where a source states them.

General Motors reused this code for more than one part over the years — read the "as named that year" column for what it meant on each row rather than assuming one meaning throughout.

4 models · 3 model years · 2 sources

White 1963 Chevrolet Impala two-door hardtop seen from the front three-quarter in an empty parking lot, showing the 1963 grille with its quad headlamps — 1963 Chevrolet Impala sport coupe in white, catalogued at the source as an Impala SS Photo: BlueCrabRedCrab, CC0, via Wikimedia Commons

Every sourced appearance

Year	Model	As named that year	Price	Installs
1963	Chevrolet Impala SS	327 cu in V8 high performance, 300 hp RPO	Unknown	Unknown
1964	Chevrolet Chevelle and Malibu SS	327/300 hp V8 (available June 1964) RPO	$137.75	1,737 Reported
1964	Chevrolet Impala SS	327 cu in V8 high performance, 300 hp RPO	Unknown	Unknown
1964	Oldsmobile Cutlass, 4-4-2 and Hurst/Olds	Engine, 290-hp Cutlass V-8 (F-85 and F-85 Deluxe except V-6 sports coupe) RPO	$34.43	Unknown
1965	Chevrolet Chevelle and Malibu SS	327/300 hp Turbo-Fire engine RPO	$137.75	13,593 Reported
1965	Chevrolet Chevy II and Nova	300-hp Turbo-Fire 327 V8 RPO	$134.80	Unknown

Every row traces to the source it links from on that model's own year page; this table only collects them in one place.