A Big Bronco Made Bigger
The affectionately named Big Broncos were only made for the ’78 and ’79 model years on the heels of Ford’s classic Early Bronco. Big Broncos have created a cult following of their own though, with V-8 engines, strong axles, and excellent suspension, but without the price tag associated with Early Broncos.
Kevin Koehn and his brothers took a Big Bronco and made it even bigger, with 1-ton axles, a stretched wheelbase, and huge 44-inch Pit Bull Rocker tires. The bigger body also provides plenty of room for Kevin and his whole family to get out and hit the trail, whether they are wheeling near their home in British Columbia or taking a road trip to Johnson Valley, where we caught up with him.
1978 Ford Bronco
Engine: Ford 302ci V-8
Transmission: NP435 4-speed manual
Transfer case: NP205
Front Axle: Dana 60 with 5.13 Dana 70 gears, RCV 35-spline chromoly axles, ARB Air Locker
Rear Axle: Dana 60, 5.13 gears, Yukon chromoly axleshafts, Yukon spool
Springs & Such: Custom 3-link with 6-inch lift coils and 14-inch-travel Bilstein 7100 shocks in front; 6-inch Skyjacker leaf springs and 13-inch-travel Rancho RS9000 shocks in the rear
Tires & Wheels: 44x19.50/16.5 Pit Bull Rockers on recentered Hutchinson Hummer rims with custom rock rings
Steering: Ford steering box tapped for hydraulic-assist steering with 13⁄4x8-inch PSC hydraulic ram, Chevy Astro van power steering pump
Other Stuff: 13⁄4x0.120-wall Koehn Performance and Fabrication rollcage, pipe bumpers with Ramsey 8000 industrial winch, onboard air, custom skidplates