1971 Ford
Bronco
The Ford Bronco is an adventuresome breed of four-wheeler that can get up, over, around or through all kinds of obstacles that would stop the others. The key angles of approach, break-over and departure (details on the back cover) have been maximized to give optimum off-road freedom and mobility. Large angles of approach and departure permit getting up and down steep inclines or into and out of deep ditches. Big breakover angle helps climbing over peaked projections without hanging up amidships. High ground clearance and tough, protected underside further aid in negotiating difficult obstructions. Bronco's heavy-duty front axle and exclusive Mono-Beam front suspension provide greater durability and reliability for breaking new trails. The identical track of both front and rear axles makes the going easier. Front wheels break the path through brush, snow or sand, and the rear wheels have a matching track so they can follow right through with minimum resistance. You get a smoother ride and have more power in reserve for the really bad spots. Mono-Beam front suspension is as smooth riding as it is sturdy. Bronco gives you a comfortable ride on the highway and is remarkably well-behaved on off-road jaunts. Wide-track axles provide stability on the slopes and sharp turning maneuverability. All in all, Bronco is the smooth, sure way to reach those difficult job sites or faraway recreation spots. Spirited Six or V-8 engines put plenty of power at each wheel for terrain-conquering performance through mud, snow or sand. Sturdy Broncos come in your choice of short-roof pickups or full-roof wagons. 1971 Sport Bronco Pickups and Wagons offer higher levels of interior appointments and exterior trim.
Excellent ground elearance. Bronco combines the best ground clearance amidships (w/optional 6.50 x 16 tires) with a big ramp breakover angle to allow crossing over high projections. The 1971 Ford Broncos excellent angles of approach and departure provide greater freedom from hangups when approaching or leaving steep inclines and ditches.
Superior maneuverability. Maneuvering around boulders and other off-road obstacles is a cinch with a nimble Bronco. Wide-track front axle with 37° angle provides best maneuverability of any 4-wheeler. Bronco can turn in a small 33.6 foot circle - tree to tree - sharper than anything in its class.
Heavy-duty front axle. Bronco's exceptional ability to get up and over high obstructions is matched by its ability to take it when crashing down. Punishing shock loads are just routine off-toad work for Bronco's heavy-duty front axle. And rugged Mono-Beam front suspension provides stronger support for the big axle.
Slope-hugging stability. '71 Ford Bronco has the optimum track width. Wheels are set wide apart for excellent off-road stability, yet narrow enough negotiate twisting paths and trails. And Broncos 'Identical Track' front and rear axles allow the rear wheels to follow in the same path made by the front wheels for easier trailblazing.
The 1971 Ford Bronco's heavy-duty front axle and exclusive Mono-Beam front suspen sion provide an unbeatable combination of strength and stamina. Th big Dana standard heavy-duty front axle has the muscle and brawn to withstand severe off-road punishment. Unique Mono-Beam front suspension smooths the ride while it reinforces durability. This is accomplished through the use of strong, easy-riding coil springs and sturdy forged-steel radius rods that attach the heavy-duty axle to the all-welded box section frame. Heavy rubber insulator mounts absorb shocks. Forged-steel track bar extends across the front providing lateral stability. Bronco's proven front-end design also features high-density polyurethane-filled kingpin bearing caps that automatically compensate for wear and help prolong bearing life. A special steering-linkage shock absorber is standard for added protection against violent jolts in off-road operations.
The big, optional 302-cu, in. puts 205 surging horses under the hood! Spirited 170-cu. in. Six is standard. Both engines are equipped for steep grades with special carburetor and fuel pump. Broncos feature optimum power-to-weight ratios for stay-ahead trails or turnpikes.
| 170-cu in. Six (standard) | 302-cu in. V-8 (optional) | |
| Max Gross HP @ RPM | 100 @ 4000 | 205 @ 4600 |
| Max Gross Torque (lbs-ft)) | 148 @ 2600 | 300 @ 2600 |
| Bore and Stroke (In.) | 3.5 x 2.94 | 4.0 x 3.0 |
| Compression Ratio | 8.7 to 1 | 8.6 to 1 |
Bronco's clean, uncluttered interior is as handsome as it is roomy and practical. Comfortable front bucket seats, or the combination of front buckets and a two-passenger rear seat (wagons), are optional. The standard full-width seat iS wide enough for three adults. All front seats are upholstered with long-wearing, easy-to-clean vinyl and have a fore and aft travel adjustment of five inches. Convenient transmission shift lever is in the familiar steering-column location. Simple, floor-mounted T-bar transfer case control allows shifting into 4-wheel drive without stopping or clutching. Bronco's tight body and suspended foot pedals help seal out noise, dust and road splash. Fresh air heater and defroster, lockable glove compartment, padded instrument panel, two-speed electric windshield wipers, sun visors and vinyl-coated rubber floor mat are all standard.
Sport Bronco Wagon and Pickup features, in addition to or in place of standard features, include: Pleated parchment vinyl front seat • Vinyl door trim panels with bright-metal moldings • Hardboard headlining with bright-metal retainer moldings (wagon models) • Parchment vinyl front floor mat with bright-metal retainers • Rear floor mat included with optional rear seat (wagons) • Cigarette lighter • Horn ring • Bright-metal drip rail moldings • Bright-metal windshield and window frames • Bright-metal grille frame molding and tailgate release handle • Bright headlight, side marker light, rear reflector and taillight bezels • Argent painted grille • Chrome bumpers, front and rear • Chrome front bumper guards • Bright-metal wheel covers (w/15-in. wheels only) • Bright-metal "Sport Bronco" emblem.
Bronco Seating Options • Full-width front seat standard. • Sporty bucket seats optional. • Front bucket seats and two-passenger rear seat are available in wagons.
| Wagon | Pickup | |
| Tires | E78-15 | 6.50 x 16 |
| Approach Angle | 40.2° | 45.0° |
| Departure Angle | 26.88° | 31.2° |
| Breakover Angle | 28.59° | 34.0° |
| Ground Clearance Front Axle | 7.45" | 9.25" |
| Ground Clearance Rear Axle | 6.4" | 8.22" |
| Ground Clearance RBA | 11.3" | 13.3" |
| Turning Circle | 33.6" | 33.6" |
| Standard | Optional | |
| Alternator | 38 amp | 55 amp |
| Front Axle: Capacity - Ratio | 2500 - 4.10 | Limited Slip |
| Rear Axle: Capacity - Ratio | 2780 - 4.11 | 2780 - 3.50, 4.57, 3300 - 3.5, 4.11 |
| Ratios for 2780 and 3300 Traction-Lok | - | 3.5, 4.11 |
| Battery 12 V | 54 plates, 45 amp hr | 66 plates, 70 amp hr |
| Brakes - Dual Hydralic System | Self adjusting | - |
| Front | 11x2 | - |
| Rear | 10x2 1/2 | - |
| Parking Brake | Cable actuation of rear brakes | - |
| Clutch: Dio. (in.) | 9 3/8 w/Six, 11 w/V.8 | - |
| Engine | 170 cu in Six | 302 cu in V-8 |
| Frame Section Modulus | 2.04 | - |
| Hubs Front | - | Free Running |
| Shock Absorbers | Double acting | - |
| Springs, Front: Coil, Capacity ® pad (lb. ea.) | 750 w/Six, 800 w/V.8 | 850 |
| Springs, Rear: Capacity @ pad (lb. ea.) | Progressive 930 | Progressive 1280 |
| Steering | Gemmer worm & roller w/linkage shock absorber | - |
| Fuel tank | 14.5 gal | 11.5 gal aux |
| Transfer Case | 2 speed thru-drive | - |
| Transmission | 3 speed direct | - |
