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Buick LeSabre 400 Convertible

The Buick LeSabre 400 Convertible was a stylish and comfortable full-size drop-top produced in the early 1960s, designed to offer premium open-air cruising without the high price tag of Buick’s top-tier models. The “400” designation referred not to the engine displacement but to the transmission package—specifically Buick’s “Super Turbine 400” automatic, a smooth-shifting and durable 3-speed unit that became a hallmark of the brand’s luxury and drivability.

Introduced as part of the LeSabre lineup, the 400 Convertible embodied Buick’s balance of style, space, and performance. Under the hood, it was typically powered by a 401 cubic inch “Nailhead” V8, delivering around 325 horsepower. This engine provided strong torque and refined power delivery, making the LeSabre 400 capable of effortless highway cruising and responsive around-town driving.

The exterior design followed the clean, elongated lines of the early ’60s Buicks, with a wide grille, sculpted body sides, and tasteful chrome detailing. The convertible roof stowed neatly behind the rear seat, enhancing the car’s sleek profile when down and creating an elegant silhouette.

Inside, the LeSabre 400 Convertible offered a spacious and upscale interior. Seating for six was common, with bench seats front and rear, though bucket seats and a console were available in certain configurations. Buick emphasized comfort and convenience, so features like power steering, power brakes, a padded dashboard, and available air conditioning made the driving experience smooth and refined.

The ride quality was classic Buick—soft and controlled—thanks to the brand’s attention to suspension tuning and sound insulation. Even at highway speeds with the top down, the LeSabre offered a quiet, stable ride.

Today, the Buick LeSabre 400 Convertible is a desirable classic for those who appreciate full-size American convertibles with V8 power and timeless style. It represents a golden era of motoring where open-top luxury, bold design, and effortless cruising came together in one handsome package.

Vehicle
Manufacturer Buick
Country USA
Production Started 1969
Production Stopped 1969
Production Numbers
Vehicle Type
Bodystyle Carbio convertible
Number of Doors 2
Number of Seats 6
Engine
Engine Manufacturer Buick
Engine V8
Engine Location Front
Engine Displacement 5724 cc
Valvetrain OHV
Valves per Cylinder 2
Bore 96.5 mm
Stroke 97.8 mm
Compression Ratio 10.3:1
Cooling System Water
Charging System
Fuel Type Petrol
Fuel System Carburator 1 x Rochester
Fuel Capacity
Aspiration Normal
Performance
Top Speed 112 mph
Acceleration 10.5 s
Power 10.5
Torque 509 / 375 @ 3200 rpm
Steering, Transmission & Suspension
Drivetrain Rear
Transmission A3
Steering
Front Suspension
Rear Suspension
Front Brakes
Rear Brakes
Chassis
Tyre Dimensions
Dimensions
Weight 1900 kg
Length 5550 mm
Width 2032 mm
Height 1387 mm
Wheelbase 3129 mm