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Buick built the 1965 Riviera as a luxury coupe, then quietly optioned in a 360-horsepower 425 V8 for buyers who wanted it both ways. Fewer than 3,500 people checked that box, making the Gran Sport one of the rarest true muscle cars of the era. Decades later, Bill Burr got behind the wheel with Jay Leno – and left convinced it might be the meanest car he’s ever driven.
Buick’s 1965 Riviera Gran Sport hid a 360-horsepower Nailhead V8 under one of Detroit’s most restrained personal luxury coupe bodies, backed by the tagline ‘the iron fist in a velvet glove.’ Fewer than 3,500 buyers ever checked the option box, making it arguably the rarest performance Buick of the decade. Read on to find out why this sleeper still flies under the radar.
A walkthrough of the affordable end of the Mecum Kissimmee 2026 catalog shows where the real bargains hide – Riviera boat tails, Cougar XR-7s, four-eye Fox Mustangs and a 1950s Pontiac Chieftain that regulars called the steal of the day. The badge you skip is the money you keep. Here is how to read the cheap end of an auction lineup without buying a project that eats you alive.
Debbie Powless’s love of Buicks started with her grandfather’s Electra 225, a gift that planted a seed years before she ever owned a Buick herself. After spotting a Riviera at a car show, she searched until she found this exact 1971 Buick Riviera GS Gran Sport in Vintage Red, then restored it from the ground up. Under the hood sits the 455 cubic inch V8 that gives the car its signature sound. Watch to hear it, and to hear how a family hand-me-down turned into a decade-long search.
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.
This 1932 Ford roadster proves the old hot-rodder rule that the engine badge never mattered as much as what is actually bolted to it, under the hood sits a bored-out Pontiac 400 breathing through a tri-power setup pulled from a completely different Pontiac decades later. Add in a mix-and-match interior built around 1940 Ford components, and this roadster tells the story of a builder who cared more about the finished product than staying loyal to one brand. Here is what makes this kind of cross-brand hot rod build a genuine hobby tradition, not a shortcut.
Buick kept rewriting the Riviera almost every single year between 1966 and 1970, breaking its own sales record again and again while quietly shifting the car’s mechanical identity underneath. From hidden headlights that finally became exposed to a torque-monster 455-cubic-inch V8 with 510 lb-ft on tap, the changes never stopped. Read on to find out how a car built on shared Cadillac and Oldsmobile bones carved out such a distinct identity of its own.
Randy Clark of Hot Rods and Custom Stuff brought his 1966 Buick Riviera to Jay Leno’s Garage wearing a gold paint job that took his team fifteen hundred hours to complete — longer than most full restorations take start to finish. The Riviera’s clean, GT-inspired lines gave Clark’s crew the perfect canvas for that level of obsession. Even Leno, who has seen thousands of custom builds, wanted to know how anyone justifies that kind of time.
The 1965 Buick Riviera Gran Sport was the first year Buick attached that badge to its personal luxury coupe, and the package hid a genuinely serious performance setup under all that plush trim. Dual four-barrel carburetors, a stiffened chassis and a limited-slip rear turned a two-and-a-half-ton cruiser into something that could embarrass much lighter cars. This particular build adds a custom interior, aftermarket wheels and a lowered stance without losing what made the car special. Read on for what the Gran Sport package really included.
The 1963 Buick Riviera almost wore a Cadillac badge instead, GM’s styling chief originally designed it as a LaSalle-branded personal luxury coupe before Cadillac passed and Buick claimed the project. Deliberately limited to 40,000 units to preserve its exclusivity, the Riviera paired genuine luxury styling with a 325-horsepower Nailhead V8 capable of 0-60 in around 8 seconds. It’s a car built on a rejection that turned into one of Buick’s most important models of the decade.
Bobby Alloway brought this 1965 Buick Riviera to the 2016 SEMA Show looking almost stock from twenty feet away, which is exactly the trick. Underneath the unchanged sheet metal sits a Chevrolet 502 big block, a Tremec five-speed, an Art Morrison front clip, and Billet Specialties wheels measuring 19 inches front and 22 rear. The original Nailhead V8 is nowhere to be found. Read on to find out what makes this build work.
GM design chief Bill Mitchell wanted a full-size luxury coupe with the drama of a 1930s speedster, and the boattail Riviera is what happened. He modeled its tapered tail on the 1963 Corvette Sting Ray he considered his masterpiece, then watched the shape get stretched across a much larger body. Mitchell himself later admitted the result looked less like a speedboat than a tugboat. This 1973 example, the last year of the design, went through Count’s Kustoms.
This 1967 Buick Riviera arrived the year Buick retired its long-serving “Nailhead” V8 in favor of an all-new 430 cubic-inch engine making 360 horsepower and 475 lb-ft of torque. That swap dropped the Riviera’s 0-60 time to roughly 7.8 seconds, genuinely quick for a two-ton personal luxury coupe. Presented here through Gateway Classic Cars, it’s a well-documented example of the Riviera’s first year with its most memorable engine.
The 1978 Buick Riviera looks like a routine luxury coupe, but it was actually a stopgap built to bridge two very different eras of Buick design. Hidden inside that final model year was a low key 75th anniversary edition almost nobody remembers, plus an optional Oldsmobile built V8 that changed the car’s whole personality.
Nineteen sixty-seven marked a quiet turning point under the hood of Buick’s personal luxury flagship, one most people walking past a showroom would never have noticed. The engine that had powered the Riviera for years was being retired in favor of a genuinely different design, and the replacement lasted only three model years before Buick moved on again. This numbers-matching hardtop carries that engine in a color combination Buick used for a single season. Read on for what changed and why the window was so narrow.