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Brothers With Broncos - 1971 and 1972 Ford Bronco

Two Fords that Run Fast and Slow

By Jay Kopycinski, Photography by Jay Kopycinski
Brothers With Broncos 1971 And 1972 Ford Broncos 1971 And 1972 Ford Broncos Front Angles

Specs

Vehicle: 1972 Ford Bronco
Owner/Hometown: Paul Herman/Cave Creek, Arizona
Engine: Ford 392ci V-8
Induction: FAST multiport fuel injection
Transmission/Transfer Case: NV4500/Atlas 2 4:1
Front Axle: Currie 9-inch, Dana 60 knuckles, ARB air locker, 4.86 gears, 35-spline alloy shafts
Rear Axle: Currie 9-inch, ARB air locker, 4.86 gears, 35-spline alloy shafts
Front Suspension: King 2.5 coilovers, bypass shocks, airbumps, three-link using modified James Duff arms
Rear Suspension: King 2.5 coilovers, bypass shocks, airbumps, double-triangulated four-link, Currie Antirock sway bar
Steering: Benchworks power steering box, hydro assist, custom pitman arm
Brakes: Disc brakes on all corners, cutting brakes
Tires/Wheels: 39-inch BFG Krawlers on 17x9 Walker Evans beadlocks
Interior: Mastercraft seats, custom dash, Dakota Digital gauges, Flaming River steering column

  • A four-link configuration makes up the rear suspension for the trussed Currie 9-inch. The 35-spline axle shafts ensure a strong assembly and Wilwood discs help haul the rig to a stop when needed. Travel in the rear is a healthy 21 inches. A 22-gallon fuel cell sits above.
    A four-link configuration makes up the rear suspension for the trussed Currie 9-inch. The
  • Under the hood of Paul’s yellow pony sits a torquey Ford 392 that’s been built for power and reliability. Go-fast goodies include a Scat forged crankshaft, Mahle forged pistons, Comp Cams roller components, and Air research aluminum heads. Fuel is metered into the motor using FAST multiport fuel injection. A modified Ron Davis aluminum radiator helps keep the motor cool and a custom aluminum surge tank adds some extra capacity.
    Under the hood of Paul’s yellow pony sits a torquey Ford 392 that’s been built for power a
  • After splitting a front Dana 44 axle in half at a tough truck event, Paul had a fortified Currie 9-inch with Dana 60 ends built to provide a much beefier front driveline. It’s hung with a three-link built by Bonney and setup much the same as on George’s Ford. Paul prefers to run ARB air lockers in both axles so he can selectively engage traction at each axle.
    After splitting a front Dana 44 axle in half at a tough truck event, Paul had a fortified
  • This view of the front suspension shows the set of modified James Duff suspension arms that are fortified and enhanced to provide all the needed shock mounting points. Front end travel is about 14 inches with this configuration.
    This view of the front suspension shows the set of modified James Duff suspension arms tha
  • Bonney again went to work with metal and a welder to fabricate all the front suspension mounts and shock towers. These accommodate the King trio of coilover, bypass and bumpstop. This design works well in the rocks, provides a comfortable trail ride, but also handles well for high-speed running over desert terrain.
    Bonney again went to work with metal and a welder to fabricate all the front suspension mo
  • A 4:1 Atlas 2 resides in the belly of the beast up near the front/rear lower link mounts. Combined with an NV4500 five-speed, the pair provide a wide range of drive ratios. Heavy-duty CV jointed driveshafts help hook the power to the axles.
    A 4:1 Atlas 2 resides in the belly of the beast up near the front/rear lower link mounts.
  • A Dakota Digital gauge cluster and a Flaming River tilt steering column with Grant street legal removable steering wheel project from the custom dash. Other interior appointments include a Tuffy console and dual Optima batteries mounted behind the front seats.
    A Dakota Digital gauge cluster and a Flaming River tilt steering column with Grant street
  • Driver and passengers are treated to comfort and safety in Mastercraft seats and five-point Hooker harnesses. There are no longer any doors that open. A full DOM rollcage surrounds the occupants and is skinned with fiberglass body panels. The interior was coated with gray Line-X liner.
    Driver and passengers are treated to comfort and safety in Mastercraft seats and five-poin
  • The detail in the fabrication work on both of these rigs is impressive. Rob Bonney spent countless hours bent over a TIG torch creating numerous suspension components, mounting structures, and the custom pitman arms.
    The detail in the fabrication work on both of these rigs is impressive. Rob Bonney spent c
  • King coilovers and triple-bypass shocks are tucked under the rear fenders as on the front. This combination does an excellent job of keeping the 39-inch BFG Krawlers under control whether going fast or slow.
    King coilovers and triple-bypass shocks are tucked under the rear fenders as on the front.
By Jay Kopycinski
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