1966 Buick Riviera GS Custom
Numbers-matching 425ci/340HP Nailhead V8 - ST400 switch-pitch automatic - Vintage Air
| Lot # | 2031 |
|---|---|
| Location | Ocoee, FL 34761 |
| Seller | Dealer |
 |
75702 |
 |
425ci/340HP Nailhead V8 |
 |
Automatic |
 |
Maroon Metallic |
 |
Black |
 |
494876H914945 |
1966 Buick Riviera GS – Elegance Meets Performance
This 1966 Buick Riviera GS is a stunning blend of originality, craftsmanship, and tasteful modernization, offering the perfect balance of classic Buick luxury and modern performance enhancements. Powered by its numbers-matching 425ci/340HP Nailhead V8 and paired with the original ST400 switch-pitch automatic transmission, this Riviera delivers the smooth yet commanding performance that defines Buick’s Grand Sport heritage. With extensive mechanical upgrades, a show-stopping Maroon Metallic finish, and a customized luxury interior, this Riviera GS is a turn-key masterpiece ready to drive, show, and admire.
Key Features & Highlights:
Performance & Drivetrain:
- Numbers-matching 425ci Nailhead V8, producing 340 horsepower
- Paired with the original ST400 switch-pitch automatic transmission, offering smooth and responsive shifts
- Performance upgrades include:
- MSD electronic distributor for modern ignition reliability
- QFT Slayer 750 carburetor for enhanced fuel delivery
- Custom headers and a polished 250-amp alternator
- Features a custom Strange 3.55 rear differential, providing spirited acceleration
Suspension & Braking:
- Completely rebuilt suspension for improved handling and ride quality
- Equipped with 4-wheel Wilwood disc brakes, ensuring confident stopping power
- Features fast-ratio power steering, delivering precise and responsive control
Exterior:
- Finished in a deep Maroon Metallic base/clear paint, offering a rich and timeless appearance
- Accented by NOS-quality chrome and hand-polished trim
- Custom exterior touches include:
- Frenched ’68 hood spear and shaved “Riviera” badging
- Through-body side exhaust with polished stainless tips
- 20” Foose-style wheels with redline tires
- Electronic sequential tail lamps, adding a modern flair
Interior:
- Hand-sewn black leather and alcantara suede interior with red double stitching
- Features power Strato bench seating, offering both comfort and style
- Includes a leather-wrapped dash, maroon suede headliner, and custom door panels
- Modern comforts include:
- Vintage Air front and rear systems for climate control
- Bluetooth stereo for modern connectivity
- Custom lighting and an integrated tachometer console
Documentation:
- Accompanied by its original GM Protect-O-Plate and owner’s manual, adding to its authenticity and provenance
Why It Stands Out:
This 1966 Buick Riviera GS is a rare and exceptional example of Buick’s Grand Sport heritage, combining timeless elegance, modern performance, and luxury refinement. With its numbers-matching drivetrain, extensive upgrades, and show-quality presentation, this Riviera GS is a collector-grade classic that’s ready to be driven, shown, and admired. Its custom touches, modern comforts, and impeccable craftsmanship make it a one-of-a-kind masterpiece.
Additional Details:
- Engine: Numbers-matching 425ci Nailhead V8 (340HP)
- Transmission: Original ST400 switch-pitch automatic
- Exterior: Maroon Metallic with NOS-quality chrome and custom touches
- Interior: Black leather and alcantara suede with modern amenities
- Wheels/Tires: 20” Foose-style wheels with redline tires
Conclusion:
This 1966 Buick Riviera GS is a stunning blend of classic luxury and modern performance, offering elegance, power, and refinement in one package. With its numbers-matching drivetrain, extensive upgrades, and show-stopping presentation, this Riviera GS is a turn-key opportunity to own a piece of Buick history. Don’t miss your chance to add this masterfully crafted classic to your collection!
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More Info
- Set your own reserve
- Go Live in DAYS
- Keep 100% of the Sale Price
| Ended On: | 02/23/2026 at 4:37 pm EST |
| Timezone: |
America/New_York |
| Result: |
Sold for $56,700 |
Item condition: New
888.472.9696 opt 3
Bidding History
Auction has expired
Highest bidder was: *******
| Bidder Name | Bidding Time | Bid | Auto |
|---|---|---|---|
| ******* | 02/20/2026 2:43 pm EST | $54,000 | |
| ******* | 02/20/2026 2:41 pm EST | $53,500 | |
| ******* | 02/20/2026 2:39 pm EST | $52,500 | |
| ******* | 02/20/2026 2:36 pm EST | $52,000 | |
| ******* | 02/20/2026 2:34 pm EST | $50,250 | |
| ******* | 02/20/2026 2:33 pm EST | $50,000 | |
| ******* | 02/20/2026 2:31 pm EST | $48,500 | |
| ******* | 02/20/2026 2:29 pm EST | $47,000 | |
| ******* | 02/20/2026 2:24 pm EST | $46,500 | |
| ******* | 02/20/2026 2:21 pm EST | $42,000 | |
| ******* | 02/20/2026 1:53 pm EST | $40,000 | |
| ******* | 02/20/2026 1:36 pm EST | $34,000 | |
| ******* | 02/20/2026 1:02 pm EST | $30,000 | |
| ******* | 02/20/2026 12:54 pm EST | $26,000 | |
| ******* | 02/20/2026 12:32 pm EST | $25,000 | |
| ******* | 02/20/2026 12:06 pm EST | $21,000 | |
| ******* | 02/18/2026 8:05 pm EST | $17,500 | |
| ******* | 02/18/2026 10:45 am EST | $17,000 | |
| ******* | 02/17/2026 3:02 pm EST | $12,000 | |
| ******* | 02/17/2026 2:17 pm EST | $9,500 | |
| ******* | 02/16/2026 4:24 pm EST | $6,200 | |
| ******* | 02/13/2026 1:34 pm EST | $5,000 | |
| Auction started | 02/20/2026 2:48 pm EST | ||
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I would like to look at vehicle in person.
Sure thing, we will contact you about how that can be arranged!
What was closing bid
We do not share the final bid when the reserve was not met. We can tell you that the seller is willing to consider any reasonable offer, so give it a shot!
Do u have pictures of the under body
They are already in the photo gallery
Year of paint job chips or flose are u asking in excess 0f 30.000 dollars
Do you have the original wheels for this Riviera ?
No sorry, the seller said he only has the ones currently on the car in the photos
Minimum price
Asking price
the auction is still live until 02/20/2026 at 2:30 pm EST. There is a reserve and that reserve has not been met as of yet. You are welcome to place your bids.
If the auction ends on the 20th without the reserve being met, an asking price will be shown and you will be able to make an offer based on that asking price.