MORE POWER. NO COMPROMISE.
Classic Defender diesels struggle with modern driving demands.
Limited power.
Strained motorway cruising.
Compromised towing performance.
Rad-Rover replaces outdated drivetrains with modern powertrain systems engineered for real-world reliability and everyday drivability.
CHOOSE YOUR
ENGINE PLATFORM
Five Proven Architectures.
Modern Defender performance begins with the right powertrain.
Each platform below is engineered as a complete system, not a collection of parts. Mounting geometry, cooling, wiring, transmission pairing, and transfer case alignment are defined before installation begins.
Rad-Rover Outfitters
Rad-Rover specializes in Defender engine swaps engineered for real-world performance.
With nearly 100 Defender and Land Rover powertrain conversions completed, we build defined, repeatable systems that deliver modern power, factory-correct drivability, and long-term reliability.
Every vehicle and conversion is Engineered + Hand-Built in Ames, Iowa · USA.
WHY ORIGINAL DRIVETRAINS FALL SHORT
Classic trucks weren’t built for modern roads.
Original Defender and Series drivetrains have character, but daily driving has changed. Today’s roads demand more power, better cooling, cleaner integration, and the confidence to cruise, merge, climb, and commute without planning around the truck’s limitations.
The Problem
Underpowered where it matters
Factory drivetrains can feel slow off the line, strained at highway speeds, and overwhelmed by larger tires, added weight, or hilly terrain.
Built for a different era
Older systems were never designed for modern traffic, long-distance comfort, or the drivability most owners expect from a vehicle they actually want to use.
Compromise adds up fast
Heat, noise, vibration, inconsistent performance, and aging components turn every trip into a calculation instead of a drive you can enjoy.
The Solution
Modern power. Factory-minded execution.
Rad-Rover replaces the weak link with a complete, engineered powertrain system designed around how you actually use the truck.
What that means in the real world:
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Confident highway cruising
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Better throttle response and drivability
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Cooling, wiring, and integration done right
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Power matched to your build and goals
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A truck that feels ready to drive, not manage
CHOOSE YOUR ENGINE PLATFORM
Five Proven Architectures.
Modern Defender performance begins with the right powertrain.
Each platform below is engineered as a complete system, not a collection of parts.
Mounting geometry, cooling, wiring, transmission pairing, and transfer case alignment are defined before installation begins.
LS3
The Benchmark 6.2L V8 Upgrade
Proven, globally supported performance with linear torque and OEM-level drivability.
The most balanced modern V8 solution for Defender 90 and 110.
EcoBoost
Lightweight Turbocharged Performance
Broad torque, reduced front-end weight, and modern throttle response.
Designed for drivers who want balance and everyday usability.
LT1
Direct-Injection Refinement
Modern GM architecture delivering strong torque and refined road manners.
Ideal for high-end builds prioritising performance and composure.
LT1 E-Rod
Structured Compliance Without Compromise
OEM-calibrated V8 performance engineered for regulated markets.
Delivers legitimacy and drivability in one defined system.
SBC 350 V8
Classic Small-Block Authority
Raw, mechanical V8 character with straightforward serviceability.
Ideal for heritage-focused builds that demand torque and simplicity.
Choose Your Architecture
Modern Defender performance begins with the right powertrain.
Each platform below is engineered as a complete system, not a collection of parts.
Mounting geometry, cooling, wiring, transmission pairing, and transfer case alignment are defined before installation begins.
Classic Small-Block Authority
Raw, mechanical V8 character with straightforward serviceability.
Ideal for heritage-focused builds that demand torque and simplicity.
[ Explore SBC 350 ]
SBC 350 V8
Structured Compliance Without Compromise
OEM-calibrated V8 performance engineered for regulated markets.
Delivers legitimacy and drivability in one defined system.
[ Explore LT1 E-ROD ]
LT1 E-Rod
The Benchmark 6.2L V8 Upgrade
Proven, globally supported performance with linear torque and OEM-level drivability.
The most balanced modern V8 solution for Defender 90 and 110.
[ Explore LS3 ]
LS3
2.3L EcoBoost
Lightweight Turbocharged Performance
Broad torque, reduced front-end weight, and modern throttle response.
Designed for drivers who want balance and everyday usability.
[ Explore EcoBoost ]
LT1
Direct-Injection Refinement
Modern GM architecture delivering strong torque and refined road manners.
Ideal for high-end builds prioritising performance and composure.
[ Explore LT1 ]
LS3
The 6.2L V8 benchmark for Defender conversions.
2.3L EcoBoost
Turbocharged efficiency with strong everyday torque.
LT1
Modern direct-injection V8 refinement.
LT1 E-Rod
Compliance-ready V8 architecture for regulated markets.
SBC 350 V8
Classic small-block torque and mechanical simplicity.
