1977 Cadillac Eldorado Hardtop For Sale
30,111 Original Miles * Numbers-Matching 425 V8 * Madeira Maroon * Three Meticulous Owners * Purchased From Seven Hills Motorcars at 28,150 Miles * Exceptional Originality
This 1977 Cadillac Eldorado is an exceptionally well-preserved, low-mileage example showing just 30,111 original miles and benefiting from a remarkably well-documented history of careful ownership, preservation, and conscientious maintenance. Finished in its factory-correct Madeira Maroon, Code 79, over a beautiful Claret Edinburgh Cloth and Antique Coated Fabric interior, Trim Code 79B, with a matching vinyl roof, this Eldorado retains an impressive amount of original equipment, trim, documentation, and period character. The Fisher Body tag further identifies AV7 Dual Comfort 50/50 seating and a 10B build date, representing the second week of October 1976.

The current owner purchased the Cadillac from Seven Hills Motorcars with 28,150 original miles. At that time, Seven Hills documented the car as an exceptionally original survivor with its numbers-matching drivetrain, original sheet metal, date-coded glass, outstanding interior, and remarkably solid underside. Seven Hills also reported driving the Cadillac approximately 50 miles during its ownership without problems and described it as reliable and enjoyable to drive.

Since taking delivery, the current owner has added fewer than 2,000 miles while completing an extensive program of mechanical, electrical, suspension, HVAC, cosmetic, and convenience-system servicing. Three Meticulous Owners
This Eldorado has had only three careful owners. The current owner is a retired CPA, Cadillac club member, and regular participant in car shows who is exceptionally particular about how the car is maintained.

Whenever service or replacement has been necessary, he has made a conscious effort to locate NOS, OEM, rebuilt-original, or correct authentic replacement components whenever possible rather than simply installing whatever aftermarket part was easiest to obtain. That philosophy can be seen throughout the car, from the NOS radiator and rebuilt original Quadrajet to the repaired factory radio, rebuilt original clock, OEM power antenna, correct radiator hose and clamps, preserved original speaker covers, and surviving trunk equipment. This has been a preservation-first ownership experience rather than an attempt to modernize or reinvent the car.

VIN & Factory Identification
VIN:
6L47S7Q131448
The VIN identifies this as a 1977 Cadillac Eldorado two-door coupe, factory equipped with Cadillac's carbureted 425 cubic-inch V8 and assembled in Detroit. The Fisher Body tag confirms:
1977 Cadillac Eldorado Coupe
Madeira Maroon - Paint Code 79
Claret Edinburgh Cloth & Antique Coated Fabric - Trim 79B
AV7 Dual Comfort 50/50 Seating
10B - Second Week of October 1976 Body Build
The combination of VIN information, body-tag data, numbers-matching drivetrain, original glass, preserved interior, and surviving factory equipment gives this Eldorado an unusually complete identity. Numbers-Matching 425 V8 & Transmission
Under the hood is the car's original 425 cubic-inch Cadillac V8, backed by its original automatic transmission and Cadillac's front-wheel-drive system.

Both major drivetrain components have been documented as numbers matching. The final six digits of the VIN - 131448 - are stamped on both the engine block and transmission case, confirming that both units are original to the car. Seven Hills photographed and documented these stampings when the car was offered for sale.

Seven Hills also reported that the engine started easily, idled smoothly, ran cool, and displayed no abnormal smoke, noises, or vibrations. The transmission shifted properly, and the car was road-tested at highway speeds. Since then, the current owner has addressed numerous mechanical items proactively, making the Cadillac considerably more sorted today.

Purchased From Seven Hills Motorcars
The Seven Hills Motorcars listing provides an unusually valuable historical snapshot of the Cadillac at 28,150 original miles. Seven Hills represented the Eldorado as a carefully selected vehicle rather than a dealer-auction acquisition and extensively photographed the underside, floors, rockers, lower quarters, structural areas, and other locations typically susceptible to corrosion. At the time of sale, Seven Hills represented the body panels and sheet metal as original and described the underside as exceptionally solid.

The mileage was also supported by a clear Ohio title identifying the mileage as Actual. That documentation provides an excellent baseline showing the car's condition before the current owner began his extensive maintenance and improvement program. Original Date-Coded Glass
Another particularly interesting feature is the survival of the Cadillac's date-coded glass.

Seven Hills documented that all of the major glass pieces predated the car's second-week- of-October 1976 body build:
Windshield: September 1976
Driver's Door Glass: August 1976
Driver's Rear Glass: June 1976
Passenger Door Glass: August 1976
Passenger Rear Glass: June 1976
Rear Window: September 1976
The consistency of those dates provides another indication of how intact this car remained before the current ownership. Factory Madeira Maroon Exterior
The exterior is finished in its factory-correct Madeira Maroon, Code 79, beautifully complemented by the matching vinyl roof and Cadillac's extensive chrome and brightwork. Seven Hills specifically documented the Madeira Maroon and Claret color combination as matching the codes on the Fisher Body tag.

The body remains remarkably solid, including the floors, lower quarters, rockers, and underside. In October 2025, localized rust affecting the lower right and left front fenders beneath the moldings was professionally repaired, and the affected portions of both panels were refinished. This was localized corrective work rather than evidence of a generally rusty car.

Seven Hills had previously documented the floors, rockers, quarters, frame areas, and underside as exceptionally clean and solid. New Diamondback whitewall tires were installed in January 2025, retaining the proper period appearance while improving drivability and road manners. Outstanding Original Claret Interior
The interior is one of the strongest aspects of the entire Cadillac.

Trim Code 79B identifies the factory upholstery as Claret Edinburgh Cloth and Antique Coated Fabric, while the AV7 designation identifies Cadillac's Dual Comfort 50/50 front seating. The seating surfaces appear to remain original and show remarkably little wear. Seven Hills specifically noted the absence of excessive seat wear, split seams, dashboard cracking, fading, and sun damage.

They also documented the excellent condition of the carpeting, original floor mats, gauges, brightwork, door panels, and driver's armrest. The car has also been represented as a nonsmoker example. Factory comfort and convenience equipment includes:
Six-way power front seating
Power windows
Power door locks
Automatic climate control
Air conditioning
Cruise control
Power antenna
Rear-window defogger
Remote trunk release
Automatic trunk pulldown
Map and courtesy lighting
Illuminated-entry system
A particularly interesting feature is the illuminated-entry system, including lights beneath the exterior door handles - exactly the sort of small luxury touch Cadillac was famous for during this era.

A new passenger-side courtesy-light assembly has also been installed. One currently noted item is that the passenger-side power door lock does not operate properly. Original Radio, Rebuilt Clock & Speaker Improvements
When Seven Hills sold the Cadillac, it was equipped with a vintage-style Custom Autosound radio while the original Cadillac radio was included separately with the car.

The current owner went a step further. The original Cadillac radio was professionally repaired and reinstalled, returning the dashboard to its authentic factory appearance. The original clock was also professionally rebuilt and reinstalled and is now functional.

New front speakers were installed, and the audio system has additionally been fitted with Kicker 6x9 speakers. Importantly for the preservation-minded collector, the original speaker covers were retained and remain in the trunk. A new map-light assembly has also been installed.

These improvements perfectly illustrate the approach taken throughout this car: improve functionality without discarding original components or altering the character of the Cadillac. Climate Control & Air Conditioning
Considerable attention has been given to Cadillac's sophisticated automatic climate- control system. When Seven Hills sold the car, the air conditioning operated and blew cold, but the blower was primarily directing air through the lower outlets.

The current owner subsequently completed extensive HVAC work including:
HVAC air-distribution repairs
Vacuum-hose repairs
Vacuum-source repairs
Rebuilt Caddy Daddy A/C programmer
Hot/cold air-door adjustment
Climate-control sensor reconnection
Air-temperature sensor reconnection
Air-box air-leak repairs
Heater-core hose shut-off valves
The work was performed with the goal of restoring functionality while avoiding unnecessary removal of the entire dashboard. The air conditioning operates and blows cold. Air Ride Suspension
One item to note is that the Cadillac's air ride suspension system is currently disconnected.

The system has not been fully diagnosed. A cut air hose has been observed, but its condition beyond that is presently unknown. For that reason, the air ride should be considered inoperative until inspected and repaired.

No assumption is being made that the cut hose is the only issue; it is simply the only known visible problem at this time. Remarkably Complete Original Trunk
The trunk is another particularly impressive area of preservation. Seven Hills documented the survival of the fragile original cardboard liners, original cardboard speaker covers, space-saver spare equipment, inflation equipment, jack components, factory trunk-lid decal, and even the original wooden wheel wedge.

Today, the trunk includes:
Full-size spare tire
Used OEM-style spare wheel
Original Stowaway spare
Original compressor/inflation equipment
Rebuilt original Quadrajet carburetor
Original speaker covers
Original leather key holder
Two sets of keys
Dealer brochure
Service manual
Factory rubber trunk mat
Original cardboard liners
The remote trunk release and automatic trunk pulldown, both requiring attention when the current owner acquired the Cadillac, have since been repaired. Extensive Maintenance Since Acquisition
The current owner took delivery from Seven Hills Motorcars at 28,150 miles and almost immediately began addressing both significant and minor items throughout the car. November-December 2024 - 28,172 Miles
A substantial initial service was completed:
Oil and filter change
Rebuilt carburetor supplied by United Remanufacturing
Choke pull-off adjustments
New master cylinder
Brake-fluid replacement
Rear calipers adjusted
NOS radiator installed
Fresh coolant
New radiator clamps
New heater hose
New battery
New rear springs
New distributor cap
New distributor rotor
New ignition wires
New air filter
Reverse-light electrical repairs
Headlight electrical repairs
Instrument-panel lighting repaired
Wiring and fuse-panel connections repaired
HVAC air-distribution repairs
Climate-control vacuum-hose repairs and reconnections
Wheel alignment
New York State inspection
Several of these repairs directly addressed the minor age-related issues disclosed when Seven Hills sold the car.

January 2025
New Diamondback whitewall tires
New tire valves
February 2025
New windshield-wiper blades
Used OEM rim sourced for the full-size spare
Original Cadillac radio professionally repaired and reinstalled
Original clock professionally rebuilt and reinstalled
Glovebox-operated trunk release repaired
Automatic trunk pulldown repaired
March 2025
The car's original Quadrajet carburetor was professionally rebuilt and retained with the vehicle for future use. That is a particularly valuable detail for a collector who appreciates keeping original components with the car. April 2025
New front speakers
New map-light assembly
The Cadillac has also received Kicker 6x9 speakers, with the original covers retained.

May 2025 - 28,693 Miles
Significant HVAC and suspension work was completed. Climate-control servicing included:
Rebuilt A/C programmer from Caddy Daddy
Hot/cold air door adjusted
Climate-control sensor reconnected
Air-temperature sensor reconnected
Vacuum source repaired
Vacuum connections repaired
Air-box leaks addressed where accessible without complete dashboard removal
Suspension work included:
New front lower ball joints
New sway-bar links
New sway-bar frame bushings
June 2025
Heater-core hose shut-off valves installed
July 2025 - 28,890 Miles
Correct upper radiator hose installed
Correct clamps installed
Coolant serviced
Power antenna replaced with a used OEM unit
Rear-defogger switch replaced with a used OEM unit
The decision to locate proper original-style Cadillac components instead of using generic aftermarket replacements is representative of the owner's approach to the entire vehicle. October 2025 - 29,398 Miles
Localized rust beneath the moldings on the lower left and right front fenders was professionally repaired.

The repaired portions of the panels were then repainted. December 2025 - 29,539 Miles
Oil and filter change
New York State inspection
Transmission pan re-torqued to correct a slight fluid drip
June 2026 - 29,852 Miles
New alternator
July 2026 - 29,930 Miles
New front brake anti-rattle clips
Current Mileage - 30,111 Miles
The Cadillac now shows just 30,111 original miles, meaning the current owner has driven it fewer than 2,000 miles since purchasing it from Seven Hills Motorcars at 28,150 miles. Maintained Like a Collector Car
The service history says a great deal about the current owner.

This has not been a case of waiting for things to fail and then installing whatever replacement part happened to be readily available. As a retired CPA, Cadillac club member, regular car-show participant, and extremely particular caretaker, the current owner has methodically gone through the car addressing both major and minor items. Whenever practical, original components have been rebuilt rather than discarded.

NOS and OEM parts have been sought out where available. Removed factory components have been saved. Even seemingly minor systems such as the clock, trunk release, trunk pulldown, courtesy lighting, power antenna, map lighting, and factory radio have received attention.

The result is a Cadillac that has become substantially more sorted during the current ownership while still maintaining the appearance, equipment, and character that make a genuinely original low-mileage car special. From 28,150 to 30,111 Original Miles
What makes this Eldorado particularly compelling is the ability to trace its recent history. At 28,150 miles, Seven Hills Motorcars documented an unusually original, numbers-matching Cadillac with factory colors, date-coded glass, exceptional interior preservation, original sheet metal, and a remarkably solid underside.

They personally drove the car approximately 50 miles and reported it to be reliable and enjoyable. The current owner then took that already exceptional foundation and systematically addressed many of the remaining age-related mechanical and functional items. Now showing only 30,111 original miles, the car has gained fewer than 2,000 miles but an extensive list of meaningful improvements.

Summary
This 1977 Cadillac Eldorado offers an increasingly difficult-to-find combination of documented low mileage, exceptional originality, a numbers-matching drivetrain, outstanding factory colors, and extensive recent maintenance. Highlights include:
30,111 original miles
Only three meticulous owners
Purchased from Seven Hills Motorcars at 28,150 miles
Numbers-matching 425ci V8
Numbers-matching automatic transmission
Front-wheel drive
Factory Madeira Maroon, Code 79
Factory Claret Edinburgh Cloth & Antique Coated Fabric, Trim 79B
AV7 Dual Comfort 50/50 seating
October 1976 body build
Original date-coded glass
Remarkably solid body and underside
Exceptional original interior
Original floor mats
Original radio repaired and reinstalled
Original clock rebuilt
Rebuilt original Quadrajet retained
NOS radiator
New Diamondback whitewall tires
New master cylinder
Suspension servicing
Extensive automatic climate-control repairs
Cold air conditioning
OEM power antenna
Repaired trunk release and trunk pulldown
New front speakers
Kicker 6x9 speakers
Original speaker covers retained
Rare illuminated-entry lighting under the exterior door handles
New passenger-side courtesy-light assembly
Original trunk equipment and liners
Factory rubber trunk mat
Dealer literature and service manual
Extensive documented maintenance history
Items presently noted include the inoperative passenger-side power door lock and the disconnected air ride suspension system. A cut air hose has been observed in the air-ride system, but it has not been fully diagnosed, and no assumption is being made as to whether additional repairs may be required.

From its numbers-matching 425 V8 and transmission to its Madeira Maroon finish, Claret interior, original date-coded glass, remarkable interior, rare illuminated entry, preserved trunk equipment, original radio, rebuilt clock, NOS radiator, Diamondback tires, and extremely conscientious recent maintenance, this is the kind of Eldorado that rewards close inspection. With just 30,111 original miles, three careful owners, outstanding documentation, and fewer than 2,000 miles added during a period of extensive preservation-oriented servicing, this 1977 Cadillac Eldorado is an exceptionally complete example that can be shown, driven, and enjoyed while retaining the originality that makes it special. The Current Owner Made a Great Car Better
When purchased, the Eldorado was already an extraordinarily well-preserved survivor.

However, Seven Hills' original description also documented several age-related items common to a nearly 50-year-old Cadillac. At that time, the original clock did not operate, the dash lighting was inoperative, the glovebox trunk release clicked but did not release the trunk, the HVAC blower was primarily directing air from the lower outlets, and the carburetor displayed some cold hesitation. Rather than accepting those items as simply part of owning an old car, the current owner methodically began correcting them while preserving the Cadillac's originality.

The result today is a considerably more sorted automobile than the already impressive car he initially purchased. Extensive Service History
November-December 2024 - 28,172 Miles
Shortly after taking delivery, the owner embarked on a significant initial service:
Oil and filter change
Rebuilt carburetor supplied by United Remanufacturing
Choke pull-off adjustments
New master cylinder
Brake-fluid replacement
Rear brake calipers adjusted
NOS radiator installed
Fresh coolant
New radiator clamps
New heater hose
New battery
New rear springs
New distributor cap and rotor
New ignition wires
New air filter
Reverse-light repairs
Headlight electrical repairs
Instrument-panel lighting repaired
Wiring and fuse-panel connections repaired
HVAC air-distribution repairs
Climate-control vacuum hoses repaired and reconnected
Wheel alignment
New York State inspection
This first round of servicing addressed several of the minor electrical, carburetion, and HVAC issues that had been disclosed when Seven Hills sold the car. January 2025
A new set of Diamondback whitewall tires and valves was installed, maintaining the proper period appearance while improving roadworthiness.

February 2025
Preservation and convenience work continued:
New windshield-wiper blades
OEM-style used rim sourced for the full-size spare
Original Cadillac radio repaired and reinstalled
Original clock professionally rebuilt and reinstalled
Glovebox-operated trunk release repaired
Automatic trunk pulldown repaired
Interestingly, when Seven Hills sold the car, it was equipped with a vintage-appearance Custom Autosound radio while the original Cadillac radio was included separately with the vehicle. The current owner chose to go a step further and have the actual original radio repaired and returned to the dashboard, restoring an important piece of factory authenticity. March 2025
The Cadillac's original Quadrajet carburetor was professionally rebuilt and retained with the car for future use.

That means the original carburetor remains part of the vehicle's accompanying equipment rather than having disappeared after replacement. April 2025
New front speakers
New map-light assembly
The audio system has additionally received Kicker 6x9 speakers, while the original speaker covers have been saved and remain in the trunk. Seven Hills had previously noted that the original cardboard speaker covers were still present, another small but important indication of the car's preservation.

May 2025 - 28,693 Miles
Considerable attention was devoted to the complicated Cadillac automatic climate-control system:
Rebuilt Caddy Daddy A/C programmer installed
Hot/cold air door adjusted
Climate-control sensor reconnected
Air-temperature sensor reconnected
Vacuum source repaired
Vacuum connections repaired
Air-box air leaks addressed where accessible without removing the complete dashboard
Suspension work during the same period included:
New front lower ball joints
New sway-bar links
New sway-bar frame bushings
June 2025
Heater-core hose shut-off valves were installed. July 2025 - 28,890 Miles
Correct upper radiator hose installed
Correct-style clamps installed
Coolant serviced
Power antenna replaced with a used OEM unit
Rear defogger switch replaced with a used OEM switch
The decision to locate good original Cadillac components rather than installing generic aftermarket parts is representative of the owner's approach throughout the car. October 2025 - 29,398 Miles
Localized rust affecting the lower right and left front fenders beneath the moldings was professionally repaired.

The affected portions of the panels were subsequently repainted. Importantly, this was localized corrective work rather than evidence of a generally rusty body. Seven Hills had previously documented the floors, quarters, rockers, structural areas, and underside as exceptionally solid and represented the body panels and sheet metal as original.

December 2025 - 29,539 Miles
Oil and filter change
New York State inspection
Transmission pan re-torqued to correct a minor fluid drip
June 2026 - 29,852 Miles
A new alternator was installed. July 2026 - 29,930 Miles
New front brake anti-rattle clips were installed. Factory Madeira Maroon Exterior
The exterior retains its factory-correct Madeira Maroon, Code 79, with a matching vinyl roof.

Seven Hills specifically documented the factory color combination and noted that the exterior paint and trim codes matched the Fisher Body tag. The extensive Cadillac chrome and brightwork remain particularly attractive, while the massive doors fit and operate properly. The original-style wheel covers remain with the car, and the new Diamondback whitewalls give it exactly the stance and appearance expected of a premium 1977 Eldorado.

Original Date-Coded Glass
All of the major glass pieces carry date codes preceding the Cadillac's second-week-of- October 1976 body build date. Seven Hills documented:
Windshield: September 1976
Driver Door Glass: August 1976
Driver Rear Glass: June 1976
Passenger Door Glass: August 1976
Passenger Rear Glass: June 1976
Rear Window: September 1976
That is a remarkable detail on a nearly five-decade-old car and further supports how carefully this Eldorado has survived. Outstanding Original Claret Interior
Inside is the beautiful factory Claret Edinburgh Cloth and Antique Coated Fabric interior, Trim Code 79B.

The seating surfaces appear to remain original and show remarkably little wear. Seven Hills specifically commented on the absence of excessive seat wear, split seams, dashboard cracking, fading, or sun damage, as well as the excellent condition of the carpeting, original floor mats, gauges, brightwork, door panels, and driver's armrest. Power and convenience equipment includes:
Six-way power front seating
Power windows
Power door locks
Automatic climate control
Air conditioning
Cruise control
Power antenna
Rear-window defogger
Remote trunk release
Automatic trunk pulldown
Map and courtesy lighting
Illuminated-entry system
A particularly interesting feature is the illuminated-entry system with lights beneath the exterior door handles, a wonderful piece of period Cadillac luxury seldom highlighted on surviving examples.

A new passenger-side courtesy-light assembly has also been installed. One currently noted item is that the passenger-side power door lock does not operate properly. Original Radio, Rebuilt Clock & Speaker Improvements
The dashboard once again contains the original Cadillac radio, professionally repaired and reinstalled rather than discarded in favor of a modern aftermarket unit.

The original clock has also been rebuilt and returned to service. New front speakers and Kicker 6x9s improve the listening experience, but the original speaker covers remain with the vehicle. This is exactly the kind of sympathetic upgrading that defines the car: improve its usability without discarding its history.

Remarkably Complete Original Trunk
The trunk is another area where this Eldorado distinguishes itself. Seven Hills documented the survival of the fragile original cardboard liners, original cardboard speaker covers, space-saver spare equipment, inflator, jack components, factory trunk-lid decal, and even the original wooden wheel chock/wedge. Today, the trunk additionally contains:
Full-size spare
Used OEM-style spare wheel
Original Stowaway spare
Original inflation equipment
Rebuilt original Quadrajet carburetor
Original speaker covers
Original leather key holder
Two sets of keys
Dealer brochure
Service manual
The remote trunk release and automatic pulldown, both requiring attention when the owner acquired the Cadillac, have since been repaired.

An Unusually Well-Documented Survivor
The appeal of this Eldorado extends beyond simply its mileage. You can trace the story. At 28,150 miles, Seven Hills Motorcars documented an unusually original, numbers-matching Cadillac with factory colors, original glass, original sheet metal, exceptional interior preservation, and a remarkably solid underside.

They personally drove it approximately 50 miles and reported it to be reliable and enjoyable. The current owner then took that exceptionally preserved foundation and systematically addressed many of the age-related items that remained. From the NOS radiator and rebuilt carburetors to the suspension, HVAC, electrical system, original radio, clock, trunk mechanisms, OEM switchgear, antenna, new Diamondback tires, and numerous smaller details, his goal has consistently been to make the Cadillac better without removing what makes it original.
29,930 Original Miles
With only 29,930 original miles as of July 2026, three meticulous owners, a numbers- matching engine and transmission, documented factory colors, original date-coded glass, original sheet metal, outstanding original interior, extensive surviving trunk equipment, and nearly two years of detailed recent servicing, this 1977 Cadillac Eldorado offers an unusually compelling combination.

Much of what makes this car special has never had to be recreated. It has simply been preserved. And because the current owner has been willing to spend the time and effort locating NOS and OEM components, rebuilding original parts, and correcting even small functional issues, it is arguably more thoroughly sorted today than when he purchased it at 28,150 miles.

From its numbers-matching 425 V8 and transmission to its Madeira Maroon finish, Claret Edinburgh interior, illuminated entry, original glass, factory radio, rebuilt clock, preserved trunk equipment, NOS radiator, Diamondback tires, rebuilt climate-control components, and carefully documented service history, this is an exceptionally complete 1977 Cadillac Eldorado that can be shown, driven, and enjoyed without sacrificing the originality that makes it special. For Sale By Owner Located In East Setauket, NY 11733
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Trim: Hardtop For Sale
Options: Premium Sound System, Partial Leather Interior Surface