Research Dossier — 1940 LaSalle Custom Convertible

Context. LaSalle was Cadillac’s companion marque; 1940 was its final model year. Cars shared Cadillac chassis hardware and the smooth Cadillac-built 322 cu in flathead V8, with refined styling by Harley Earl’s Art & Colour Section.

Signature cues. Tall, narrow “waterfall” grille with fine vertical bars; faired-in sealed-beam headlamps; long flowing pontoon fenders; minimal running boards; sleek beltline and optional fender skirts; convertible top with glass rear window.

Running gear. 322 cu in L-head V8, 3-speed manual; hydraulic brakes; independent front suspension with coil springs; live rear axle. Whitewall tyres and body-color steel wheels with full caps/trim rings were common.

Cabin character. Leather upholstery, banjo steering wheel, woodgrain dash with art-deco instruments; optional heater and radio; rear armrests and package shelf in convertibles.

Use the form to set factory vs coachbuilt look, top color, skirts, fog lamps, and interior depth. Prompts prioritize museum-grade fidelity using buildable LEGO techniques.