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Model year · First Generation

1966 Bronco

The original all-purpose 4x4

Ford launched Bronco with three compact body styles, a dedicated frame and a simple 4x4 formula that became the nameplate’s foundation.

The 1966 Bronco was the first model year for Ford's new compact, body-on-frame four-wheel-drive vehicle. It was offered as an open Roadster, a steel Half Cab marketed as the Sports Utility, and a steel-roof Wagon. The common U-100 designation matters: U13, U14 and U15 identify body-style series, not one shared chassis code.

This page covers U.S.-market 1966 Broncos. Early vehicles and option availability can vary, especially because the optional 289 V8 arrived during the model year. For a specific survivor, use the data plate, frame stamp and original equipment evidence rather than assuming all launch-year trucks were configured alike.

Why it matters

1966 established Bronco as a distinct Ford 4x4 rather than an F-Series or Falcon derivative, then gave buyers three radically different ways to use the same compact chassis.

What this page covers

Market: United States; first-generation Ford Bronco. Period specifications are factory-brochure claims and may vary by production timing and equipment.

Body styles: U13 Roadster; U14 Sports Utility / Half Cab; U15 Wagon

What changed for this year

New nameplate
Ford introduced Bronco on August 11, 1965 as a 1966 model, positioning it as an all-purpose/sports-utility four-wheel-drive vehicle. [1] [2]
V8 added during the year
Ford's 1966 brochure lists the 289-cubic-inch V8 as available from mid-March; the 170-cubic-inch six was standard at launch. [1]
No trim packages
The first-year catalog did not use a separate Sport, Explorer or Ranger trim package; those names arrived in later model years. [2]

Models and trims

U13 Roadster
An open-body Bronco with no fixed roof, doors or side windows; a soft top and snap-in vinyl doors were optional. [2] [3]
U14 Sports Utility
The steel Half Cab/pickup-style body used a bulkhead behind the front seats and a short bolted-on roof. Ford renamed the body Pickup for 1967 without changing the U14 series code. [2] [3]
U15 Wagon
The full-length steel-roof body was the best-selling 1966 form and offered seating for up to five. [2] [3]

Engines and transmissions

170-cubic-inch inline six
Ford listed the 170 six as standard. A source that transcribes the original brochure gives 89 hp at 3,800 rpm and 146 lb-ft; other secondary summaries publish higher figures, so the brochure-derived rating is retained with its source. [1] [4] Period gross ratings are not comparable to modern net horsepower figures.
289-cubic-inch V8
Ford made the 289 V8 optional from mid-March 1966. The same brochure-derived source gives 150 hp at 4,400 rpm and 242 lb-ft; commonly repeated higher figures remain a documented conflict rather than a reason to erase either source trail. [1] [4] Confirm the engine code and block on an individual vehicle; early six-cylinder and later V8 trucks are both authentic 1966 configurations.
Transmission and transfer case
Ford's brochure lists a three-speed manual and Dana 20 transfer case. No automatic transmission was offered for this launch-year Bronco. [1]

Capability and specifications

Wheelbase
Ford advertised a 92-inch wheelbase for every 1966 Bronco body style. [1]
Frame and driveline
The Bronco used a purpose-built ladder frame. Its 170 six came from Ford's Falcon engine family, the rear axle was F-100 sourced, and the Dana 30 front axle/Dana 20 transfer case were supplier components rather than a borrowed F-100 driveline. [2] [5]
Production
Published body-style totals are 12,756 Wagons, 6,930 Sports Utilities/Half Cabs and 4,090 Roadsters, totaling 23,776. These are historical production figures, not a VIN-by-VIN registry. [2] [3]

Colors and interiors

Factory colors
Ford's launch brochure provides the authoritative period exterior palette. Color availability and paint codes should be verified against the data plate and brochure, because survivor repainting is common. [1]
Utility-first cabin
The Roadster's open configuration, the Half Cab's bulkhead and the Wagon's full roof created distinct ownership experiences even when the chassis and drivetrain were similar. [1] [2]

Options and packages

Early options
The brochure documents choices such as the 289 V8, soft top/vinyl Roadster doors and equipment tailored to body style; the 289 was not available until mid-March. [1] [2]
No modern trim inference
Do not apply later Sport, Explorer, Ranger, Baja Bronco or modern Sasquatch terminology to a 1966 truck. Those were not 1966 factory series or packages. [2]

Safety and recalls

Period safety context
A 1966 Bronco predates modern crash-test ratings, airbags and VIN-based recall systems. Evaluate brakes, steering, tires, belts, fuel system and corrosion with a qualified vintage-4x4 inspection. [1] [2]
Recall lookup limitation
Modern NHTSA model-year recall counts are not a useful completeness proxy for a 1966 vehicle. Preserve service documentation and investigate safety upgrades individually. [6]

Owner and buyer notes

Decode the U-series correctly
U13/U14/U15 are Roadster, Sports Utility/Half Cab and Wagon series codes. They identify the body-style series, not a universal first-generation chassis label. [3] [4]
Verify engine and identity
Use the data plate and frame stamp before valuing a truck. The optional V8 arrived during the year, and body swaps, engine swaps and repainting are common across early Broncos. [3] [4]
Treat Budd-body claims carefully
Budd's role in early Bronco body manufacture is supported, but the often-repeated claim that only about 200 early production bodies came from Budd remains disputed. It should be described as a research lead, not a value guarantee. [7] [8]

Stories from this year

Three bodies at the beginning
The 1966 launch offered Roadster, Half Cab and Wagon from one compact chassis. Roadster disappeared after 1968 and Half Cab after 1972, leaving the Wagon as the sole early-Bronco body before the generation ended. [2] [3]

Sources and footnotes

Bracketed references beside a fact lead to the document that supports it.

  1. Ford 1966 Bronco sales brochure Manufacturer factory literature; page 12 specification locator
  2. BroncoFacts first-generation research dossier Synthesis anchored in Ford factory literature and cited historical sources
  3. Ford Bronco Roadster Registry: 1966-1968 history Specialist registry reference
  4. CJ Pony Parts: 1966 Bronco VIN decoder Enthusiast reference citing Ford brochure/heritage material
  5. HowStuffWorks: 1966-1977 Ford Bronco introduction Secondary historical reference
  6. NHTSA VIN Decoder Government VIN resource
  7. ClassicBroncos discussion of Budd body manufacturing Forum oral-history lead
  8. Barn Finds: 1966 Bronco Budd-body claim Secondary marketplace lead; disputed

See something missing or wrong? Send a correction or source.

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