Buick Riviera 1964 Custom

This 1964 Buick Riviera was originally sketched as a Cadillac under the code name “La Salle II” before Cadillac passed and Buick claimed the design instead. Buyers could order the 425 V8 rated at 340 horsepower or the dual-carb “Super Wildcat” version making 360, and Buick moved nearly 38,000 that year. Read on to find out how a rejected Cadillac project became one of the decade’s most respected personal luxury cars.

“Just Class!” is a two-word review that barely scratches the surface of how close this car came to wearing a Cadillac badge instead of a Buick one. GM design chief Bill Mitchell originally sketched the car as a project code-named “La Salle II,” aimed squarely at Cadillac’s lineup, before Cadillac management passed and Buick stepped in to claim what would become one of the most quietly sophisticated personal luxury cars of the 1960s. What almost got away from Buick entirely is exactly what makes this Riviera worth a second look.

The Cadillac That Became a Buick

Mitchell’s design pulled inspiration from Rolls-Royce knife-edge styling and wrapped it around a Coke-bottle body with tapered flanks and flared fenders, a look sharp enough that Buick barely touched the formula for 1964 beyond a new hood ornament and revised fender scripts. The 1963 original had already sold well enough that Buick’s engineers saw no reason to mess with success, choosing instead to refine small details rather than risk diluting a shape that had already proven itself with buyers and critics alike.

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Two Ways to Order Your Wildcat

Under the hood, Riviera buyers chose between a 425 cubic inch V8 making 340 horsepower or the “Super Wildcat” version of the same displacement, which used dual four-barrel carburetors to bump output to 360 horsepower while keeping torque identical at 465 lb-ft — the very number that gave the engine its Wildcat 465 nameplate. Either engine gave the Riviera enough authority to match its looks, a car that could genuinely move despite weighing more than two tons in most trims.

A Segment Cadillac Basically Owned by Default

Buick moved close to 38,000 Rivieras that year, a strong number for a car built to compete in a segment Cadillac had essentially owned without contest before the Riviera showed up. It’s the kind of quiet success story that gets overshadowed by louder muscle cars from the same decade, but the Riviera proved Buick could build something genuinely special when GM handed them a design nobody else wanted in the first place.

Personal Luxury Before the Term Existed

The Riviera arrived before “personal luxury coupe” was even a settled category in Detroit, predating the wave of two-door specialty cars that would define the late 1960s and early 1970s, including the Ford Thunderbird’s later iterations and Cadillac’s own Eldorado. Its combination of a big-inch V8, a genuinely elegant body, and room for exactly two people up front, with a token back seat, set a template that GM, Ford, and Chrysler would all chase for the next decade.

What Made the Interior Worth the Money

Riviera buyers weren’t just paying for styling; the cabin matched the exterior’s ambitions with details built to feel closer to a Cadillac than a typical Buick, reinforcing the car’s original design brief even after the badge changed. That attention to interior fit and finish is part of why surviving examples still feel special from behind the wheel rather than merely old, a distinction that matters enormously to a collector shopping this segment today.

Why Collectors Keep Circling First-Gen Rivieras

First-generation Rivieras like this one have quietly become a favorite among collectors who want 1960s style without the six-figure price tags attached to more famous muscle cars from the same era, which makes a clean, well-sorted example like this one an easy car to fall in love with, particularly for a buyer who values design pedigree over outright quarter-mile bragging rights.

A Design Too Good to Hand Back

By the time GM greenlit a second-generation Riviera for 1966, the formula Mitchell sketched for a rejected Cadillac had already proven itself well enough that Buick barely needed to defend keeping the nameplate in-house. That’s a rare outcome in Detroit’s internal politics, where designs and nameplates traded divisions far more often than they stayed put once a project actually worked.

A Shape That Almost Went to Cadillac

The fact that this whole shape almost went to Cadillac makes every Riviera on the road today a small historical accident worth appreciating, a case of corporate politics accidentally handing one division a design good enough to define its identity for a decade.

What the Wildcat 465 Name Actually Meant

The Wildcat 465 name attached to both versions of the 425 V8 wasn’t marketing fluff picked at random; it referred directly to the engine’s peak torque figure, a naming convention Buick used across several of its big-block applications in the 1960s to emphasize low-end pulling power over outright horsepower bragging rights. That torque-first philosophy suited the Riviera’s mission perfectly, delivering effortless highway passing power rather than the peaky, high-rpm character some contemporary muscle cars chased instead.

Riviera vs. Thunderbird: A Different Kind of Rivalry

Compared to its closest rival, the Ford Thunderbird, the Riviera leaned harder into pure driving dynamics rather than gadgetry and novelty features, giving up some of the Thunderbird’s flashier options in exchange for a chassis and V8 combination that genuinely rewarded a spirited driver. That trade-off has aged well; today’s collectors tend to rate the first-generation Riviera’s driving experience above its Ford counterpart even when both cars are equally well restored.

Why the Second Model Year Gets Sought Out

Because so few structural or trim changes separate the 1963 and 1964 model years, verifying an exact production date and matching the right badge details to the right calendar year takes a careful eye, but it also means a 1964 example benefits from a full year of running production refinements that early 1963 cars occasionally lacked. Buyers shopping this generation often specifically seek out the second model year for exactly that reason.

Who’s Actually Buying These Today

Riviera ownership today tends to attract buyers who cross over from Cadillac and Lincoln collector circles as much as from traditional muscle car communities, a reflection of the car’s original design brief as something closer to a personal Cadillac than a stoplight racer. That crossover appeal has helped keep demand steady even as tastes in the broader collector market shift toward louder, more overtly performance-focused machines.

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