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Discover The Technical Details Of The Modified Ford F4000 In Campo Grande, Equipped With Impressive 46-Inch Tires, Cummins 6BT Engine And Raised Suspension, Creating A Unique Off-Road Vehicle Capable Of Facing The Most Difficult Terrains With Brutality And Unmistakable Style On The Streets
The BFMS Channel presented in January 2026, in Campo Grande (MS), a modified Ford F4000 with 46-inch tires and a Cummins 6BT engine, famous for its durability and torque at low RPMs.
The project, detailed by owner Otair, combines severe mechanical modifications and expedition accessories for traffic on low-grip terrains.
The video quickly went viral on its channel and social media, showing how much Brazilians love this type of project.
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Tire Specifications And Suspension System
The vehicle uses Mickey Thompson tires, Baja Claw model. The declared dimensions are 46 inches in total height. The tread width reaches approximately 48 centimeters per unit.
The owner imported the components via Paraguay, acquiring the parts in Asunción. The purchase involved the last four units available in the local supplier’s stock, due to the absence of the product in the Brazilian market.
To accommodate the increased diameter of the wheels, the suspension received lift blocks. The added height to the assembly is approximately 27 centimeters. The process required successive adjustment stages to ensure the free travel of the wheels.
The wheel balancing presented technical limitations due to the mass and volume of the tires. Conventional equipment provided a partial service, estimated at 80% technical effectiveness.
The resulting vibration restricts operational speed on paved roads. The maximum safe speed lies between 70 km/h and 80 km/h. Above this limit, directional stability is compromised by the oscillation of the tires.
Previously, the vehicle used agricultural tires derived from harvesters. The previous model had a smaller dimension, at 44 inches in height. The replacement aimed to change the traction dynamics on muddy terrains.
Engine And Powertrain Modification
The original mechanical set, composed by the Cummins 4BT four-cylinder engine, was removed. In its place, the Cummins 6BT six-cylinder engine, commonly used in medium trucks, was installed.
The replacement was motivated by the demand for higher torque to move the 46-inch tires. The original four-cylinder engine was insufficient in power to clear the tires during bogging in clayey terrains.
The power transmission to the ground features a 4×4 traction system activated by an Easy Traction mechanism. The device replaces the original electric drive with a mechanical lever to avoid electronic failures.
The front differential received a Kaiser brand locker with 100% engagement. The mechanical system ensures the synchronized rotation of both wheels on the front axle in situations of loss of grip.
The half-shafts were replaced with forged components manufactured by Distraque. The parts run the entire length of the axle to withstand the reverse torque generated by the large diameter wheels.
The rear differential maintains the original casing of the F4000. The owner plans to install a 100% locker in the rear axle to maximize its ability to overcome obstacles.
Structural Modifications To The Chassis And Body
The project base is a 2011 Ford F4000 chassis. The original structure was cut to reduce the wheelbase and overall length of the vehicle. The goal was to adapt the dimensions to accommodate a conventional pickup truck bed.
The installed bed belongs to the Max Power version of the Ford F250. The adaptation eliminated the typical chassis-cab configuration of light trucks, giving it the aesthetic of a passenger vehicle.
Despite the shortening of the chassis, the rear axle and track remained original. The vehicle preserves the load robustness of the F4000 model, although adapted for recreational use and expeditions.
The vehicle’s mileage at the time of acquisition was 39,000 kilometers. The current odometer records 51,000 kilometers, totaling 12,000 kilometers traveled over seven years of ownership.
The exhaust system was modified with the installation of a vertical exhaust. The gas outlet is positioned behind the cabin, on the right side of the bed.
The exterior paint and finish follow the original standard, with the exception of functional modifications. The structure was designed to withstand severe use on trails and travel in rural areas.
Recovery Capacity And Expedition Accessories
The vehicle is equipped with two winches for self-recovery on heavy trails. The unit installed on the front bumper has a nominal pulling capacity of 22,000 pounds.
At the rear, a second winch with the same capacity of 22,000 pounds was installed. The redundancy aims to ensure the vehicle’s extraction regardless of its position in relation to the anchoring points.
For support on trips, the bed houses a stainless steel water tank. The reservoir features a pressurization system to allow water use in camps.
Access to the cabin required the installation of auxiliary steps over the original ones. The solution, called “step on step,” creates an intermediate step to compensate for the vehicle’s height.
The interior includes leather-covered seats and a car refrigerator. The equipment allows for refrigerated storage of food and beverages during prolonged travels.
Above the cargo structure, an automotive rooftop tent was installed. The equipment features a side opening and telescopic ladder, accommodating occupants for overnight stays in locations without infrastructure.
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