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What’s Under the Hood of This 1966 Ford Bronco Will Shock You!

4BroncoTurbo

Harry WagnerPhotographer, Writer

Honestly, we don’t even know where to start with Doug Brown’s 1966 Bronco. At first glance it looks like a clean, uncut Early Bronco that spends most of the time in the garage. The paint is perfect, and the skinny BFGoodrich tires and American Racing wheels really complete the look. Then he fires up the engine, and it is immediately obvious that there isn’t a 289 under the hood. Actually, it has a four-cylinder engine: a 4BT Cummins turbodiesel. Doug bought the engine off of eBay with 60,000 miles on it and installed it in his Bronco as part of a four-year restromod that started back in 2009.

We’re just getting started. The Cummins is backed by an NV3500 manual transmission rowed by a JB Custom Fab shifter. This is a modern five-speed manual with a hydraulic clutch linkage and easy shifting. Doug rows the gears on a regular basis, as this Bronco is his daily driver.

“It gets about 24 miles per gallon on my 20-mile drive to work,” he tells us. “I’ve put about 40,000 miles on it since I swapped the engine in.”

As if that weren’t enough, the NV3500 is mated to an Advance Adapters Atlas II transfer case with a 3.8:1 low-range ratio. This allows Doug to tip-toe through trails like the Rubicon and Hell’s Revenge in Moab. The Bronco has received a few battle scars along the way, but Doug takes it all in stride. It seems like a small price to pay for a vintage 4x4/daily driver/rockcrawler all in one!

Tech Specs
1966 Ford Bronco
>Drivetrain
Engine: Cummins 4BT diesel
Transmission: NV3500 5-speed manual
Transfer Case: Advance Adapters Atlas II
Front Axle: Dana 44 with 3.50 gears and ARB Air Locker
Rear Axle: Ford 9-inch with 3.50 gears and ARB Air Locker
>Suspension
Springs & Such: Tom’s Bronco Parts coil springs and CAGE extended radius arms, Bilstein 7100 shocks (front); Tom’s Bronco Parts leaf springs and Bilstein 7100 shocks (rear)
Tires & Wheels: 255/85R16 BFGoodrich Mud-Terrain KM2s on 16x8 American Racing Ansen Sprint rims
Steering: 76 Bronco power steering box, Flaming River steering column, Extreme Custom Fabrication tie rod and draglink
Other Stuff: Custom aluminum bumpers, Warn Zeon 10, tire carrier with complete hub and brake rotor, Speedway Motors radiator, BC Broncos 23-gallon fuel tank, Duramax air box, ARB twin air compressor, Vanco hydroboost brakes, Ruff Stuff pinion guard, H4 headlights, aluminum intercooler, JB Custom Fab shifter and boot, Wild Horses Highlander hood, Bestop seats, Dakota Digital gauges, MileMarker hubs