Electric Story | Fuel2Electric's 1966 Ford Mustang

This Mustang has followed us everywhere. We’ve shown it, driven it, opened the hood a thousand times, and told its story over and over to enthusiasts across North America. Eventually, we realized something was missing: we had never truly put our motivations and decisions into writing. This is that story—the honest one, behind every choice, every compromise, and every risk that shaped our very first electric classic.

A Legend Chosen: Finding the Mustang

Some cars choose you, and some wait patiently until you’re ready to turn them into what they were meant to become. For us, that car was a 1966 Ford Mustang — a classic hardtop, silver-blue, garage-kept in Arkansas, untouched by rust, rain, or neglect. It carried all the subtle cues of a true original: chrome that still shone, steel that closed with a heavy, honest click, and the unmistakable Mustang silhouette — instantly recognizable, from the coiled running-horse grille emblem to the slanted headlights and the tiny triangular side windows that made the body language uniquely Mustang. Across the world, that profile speaks to people. For two of the three Fuel2Electric co-founders — French at heart — that profile was a declaration of love to American automotive legend.

Technically, the original 1966 Mustang was simple and modest: a 200-cubic-inch inline-six making around 120 horsepower and built to be a light, easy cruiser. But its look promised more — muscle, presence, and attitude — power it never delivered. 

After months of searching classifieds, we found it on Craigslist in Rogers, Arkansas — first owner, original interior, all matching. So we bought it, loaded it on a trailer, paid cash, and brought home our first EV conversion mission.

De-ICE: Removing the Past to Make Room for the Future

At the shop, the de-ICE began. The engine, exhaust, fuel lines, tank — everything tied to combustion power was ripped out. The moment we removed the fuel tank was symbolic yet real: the car felt lighter instantly until we prepared it to carry electrons.

Our vision was clear: install manual transmission, real A/C and heat, keep manual windows but centralized locks, analog EV gauges, and no visible “futuristic” electronics. No one should know the car was electric — except that it didn’t have an exhaust pipe. The transformation was about subtlety, authenticity — and reinvention.

Chassis & Suspension Overhaul: Preparing for Electric Torque

Before installing a single EV component, we had to rewrite what the chassis could handle. The front suspension, stock from 1966, was removed. We installed a Mustang II front suspension to improve geometry and handling, accommodate heavier components, and make room for the batteries. Four-wheel disc brakes replaced the original drums. A new differential replaced the old rear axle. We also swapped in a manual gearbox to replace the existing C4 automatic transmission. From fragile ’60s hardware, the Mustang became a platform built for modern power and safety.

EV Planning & Procurement: The Invisible Work

While metal was welded and mechanical parts changed, another build was happening entirely out of sight — on spreadsheets, over emails and calls. We defined every requirement: battery capacity, thermal management, component placement, wiring scheme, safety redundancies, cooling thicknesses. Should we use an integrated AEM charger/DC-DC converter combo? Or split them for easier maintenance and placement? Should we build our own high-voltage junction box, or trust emerging, safety-engineered solutions?

Battery packaging became the hardest decision. We selected ten Tesla modules — but they couldn’t remain a single giant pack. Weight distribution, cooling, serviceability: everything demanded separation. In EVs, battery packs are paradoxical: they must be small yet energy-dense, sealed yet liquid-cooled, rugged yet serviceable, safe yet powerful. Designing that pack felt like building fire in the forest with no tools — theoretical knowledge was useless unless it translated into guarantees.

We spoke with more than forty vendors. Placed twelve major orders. Pored over spec sheets, wiring diagrams, charging and torque curves. When we started in 2021, there was no complete “classic Mustang EV kit.” Just fragments. We were crafting an entire ecosystem from pieces.

EV Installation: Learning on the Go

Finally, the EV installation began — and the real challenge surfaced. Our builder was a brilliant mechanic, but a conversion rookie*. Instead of him guiding the build, we became the teachers. We walked him through every detail: placement, thermal paths, safety margins, wiring looms. He started with what he knew best: mechanical. The first motor married to the transmission, then removed. A second motor test-fitted. Then removed again. In and out, in and out. Weeks passed not because of incompetence, but because we were rewriting the definition of “standard build.”

We had insisted on mock-ups, but we weren’t there every day. Habits from traditional automotive work took over. When we realized the process would take at least three to four times longer than planned, we recalibrated. We decided only to intervene when cost or safety was at stake. From that point, things sped up.

That compromise — trusting our builder but staying vigilant — transformed the project. It turned frustration into clarity, haste into precision. It made us better builders.

* Our builder was an outstanding mechanic, but a true rookie when it came to EV conversions. Looking back, we have no regrets about that choice, because our ambition went far beyond a single car. We aimed for two goals at the same time: converting a classic to electric, and converting a traditional hot rod shop to EV technology.

It was bold. Too bold, perhaps. That ambition cost us both time and money. But in the end, it also shaped the car into something far greater than we ever imagined. What started as one build became a collective effort—a whole pack of builders stepping in at different stages, each contributing their expertise exactly when it was needed.

In truth, this car was never the work of just one shop or one pair of hands. It became a true team effort. And that shared knowledge, those combined skills, are exactly what made the final result so exceptional.

Final Hardware Choices: Compromise, Reality & Intentionality

Because torque is immediate and brutal, any drivetrain component must be chosen with care. We went for a manual gearbox — a torque converter would have cost as much as one motor, and we chose to install two NetGain Hyper 9 144V motors. Dual-loop cooling: one for the two controllers, one for the battery packs. An Elcon 6.6 kW onboard charger — enough for our use case of daily driving or weekend outings, without unnecessary complexity. For instrumentation, we used Speedhut analog EV gauges, keeping the interior honest to the 1960s look. We kept the original ignition key, and only added a discreet button for the electric parking brake.

Software and programming: the network effect

This story could be told from many technical angles, filled with data logs, voltage curves, and calibration tables. But we chose to tell it the way any car enthusiast would understand it: as a long road of learning, trust, and human connections. For instance, every challenge tied to programming—mostly the BMS configuration, and the motor controllers—was backed by this incredible reservoir of collective knowledge that we built when searching for the right options for our setup. At no point did the software side feel overwhelming or out of control. Not because it was simple, but because we were never isolated. 

First Drive: Triumph, Euphoria — and a Brutal Lesson

Finally, it was time. The Mustang rolled out, silent but alive. John and Laurent took the first drive. The instant torque, the smooth pull, the near-invisible transformation — it was intoxicating. In that moment, the car didn’t feel like a project. It felt like a revelation.

But exhilaration turned quickly into failure. Under the instant electric torque, the transmission snapped. That gearbox — once strong enough for an inline-six — was exposed as the weakest link. Traditional drivetrains often can’t handle EV power delivery. The lesson was painful but essential. Direct drive? More invasive. More radical. But stronger. More efficient. More durable. We opened and fixed the transmission and rebalanced the entire drivetrain (both motors, transmission, and driveshaft). The result: zero vibrations, perfect alignment, and optimal power delivery in every gear. 

What the Mustang Taught Us — and What It Built Inside Us

Through the months of metal, sweat, wiring, failures, and victories, the Mustang became more than a car. It became our masterclass. It taught us:

    - Battery packs are not components, they are complex systems requiring safest-first design

    - Integration matters more than premium parts

    - Rigidity, thermal management, serviceability, safety — these are the pillars of a real EV build

    - Patience, documentation, respect for wiring and high voltage are non-negotiable

    - Classic cars deserve evolution, not stagnation

It also taught us about ourselves. About our limits. About how to trust someone else’s hands. About how to ask better questions only when needed, and how sometimes stepping back is the best way to lead. We learned humility, discipline, respect for components, and a deeper love for both muscle cars and modern technology.

Trust with a builder doesn’t come overnight. It grows with conversations, with setbacks, with late-night troubleshooting calls and shared victories when something finally works. And when that trust is reinforced by a network of true experts, even the most complex parts of an EV conversion stop feeling intimidating. They become manageable. Even exciting.

That first drive was not just the validation of a machine—it was the validation of a philosophy. A proof that when knowledge is shared, when expertise is connected, and when trust is built patiently, the most complicated projects become achievable. And that, ultimately, is what Fuel2Electric was built for.

Today, all the connection we build at Fuel2Electric — every project, every kit, every partner, every safety class — carries the blueprint born from that silver-blue Mustang. That build was never just about electrifying a classic. It was about proving that heritage and innovation can coexist. That a car built in 1966 can be reborn for 2030. That a dream restored with electrons can still carry the soul of steel.

The Timeless 1966 Mustang: A Perfect Blend of Classic Style and Electric Power

1966 Mustang EV Conversion: Classic Style Meets Electric Power

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