1981 Bronco — Overdrive and automatic hubs

This page covers U.S.-market 1981 Broncos. The two-door full-size wagon and carbureted 300-six/302-V8/351M-V8 range continued. Historical sources agree on the year’s 39,853 total; the often-quoted 0.71 overdrive ratio comes from a single specialist account and remains labeled provisional.

Why it matters

1981 made the TTB-era Bronco more convenient and highway-friendly without changing its basic full-size formula.

What this page covers

Market: United States; third-generation Bronco.

Body styles: Two-door full-size wagon with removable rear hardtop

What changed for this year

Four-speed overdrive manual: A four-speed overdrive manual joined the transmission range. One specialist account lists a 0.71 fourth gear, but that exact ratio lacks independent confirmation. [1] [2]
Automatic-locking hubs: Historical year-by-year references identify automatic-locking front hubs as standard equipment for 1981. [1] [2]

Models and trims

Base, XL and XLT context: Trim terminology follows contemporary F-Series practice but secondary listings vary. Use the certification label, original equipment and paperwork to identify a survivor. [1] [2]

Engines and transmissions

4.9-liter inline six: The carbureted 300 six remained standard and manual-transmission-only in this period. [1]
5.0-liter and 5.8-liter V8s: The carbureted 302 and 351M remained optional; 1981 was the final Bronco year for the 351M before the Windsor replacement. [1]

Capability and specifications

Historical production: Two historical compilations report 39,853 units. Neither provides configuration-level Ford records or explicit export scope. [1] [3]
Front suspension: Dana 44 Twin Traction Beam independent front suspension continued; hub function and beam alignment need individual inspection. [1] [2]

Colors and interiors

Factory finish: Use the certification label, period literature and original documentation to verify paint and interior; restoration colors alone are not evidence. [1]

Options and packages

Free Wheelin' carryover: Historical sources describe Free Wheelin' option groups continuing into 1981, but exact package content and originality need vehicle-level documentation. [1] [4]

Safety and recalls

Hub and TTB inspection: Confirm automatic hubs engage correctly and inspect beam pivots, steering, alignment, brakes, fuel system, roof seals, tires, wiring and corrosion. [1] [2]

Owner and buyer notes

Check overdrive and hubs: Verify transmission identity, shift operation and hub engagement rather than assuming original equipment from model year alone. [1] [2]

Stories from this year

Making the redesign easier to live with: After 1980 introduced the new chassis, 1981 focused on everyday usability through overdrive gearing and automatic front-hub operation. [1] [2]

Sources and footnotes

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

Ford third-generation Bronco history Manufacturer history and year chronology
Broncozone 1978-1996 history Specialist owner reference; granular claims provisional
Blue Oval Trucks production numbers Specialist historical compilation
Third-generation Bronco trim research Specialist historical reference

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