Chevrolet Camaro 2010 Widebody 1500 RWHP

A 2010 Camaro SS left the factory with an LS3 rated at 426 horsepower. This widebody example claims 1,500 at the rear wheels, which means almost nothing inside the block is original and the fenders had to grow to keep the tires underneath it. Here is what GM actually shipped in 2010 and what it takes to more than triple it.

Fifteen hundred horsepower at the rear wheels is not a number any fifth-generation Camaro owner plans for on the day they sign the paperwork. Somewhere past that figure, a widebody SS stops behaving like the car General Motors engineered and starts behaving like something else that happens to share a silhouette with it. The factory LS3 under a stock 2010 Camaro SS hood was already remarkable news, good for more power than most Corvettes had produced a decade earlier. This build treats that as a floor rather than a ceiling, swapping in a fully built LS combination and reshaping the bodywork just to keep enough rubber under the car. Understanding how far that is from the starting point requires knowing what the starting point actually was.

What GM Actually Shipped in 2010

The fifth-generation Camaro SS launched for 2010 with a 6.2-liter LS3 V8 rated at 426 horsepower and 420 lb-ft of torque when paired with the six-speed manual transmission. Behind it sat a Tremec TR6060 gearbox, and four-piston Brembo brakes handled stopping duty at all four corners. That combination made the SS one of the most powerful stock pony cars sold that year and marked the moment the Camaro returned to the market after an eight-year absence with genuine credibility rather than nostalgia alone.

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The Automatic Got a Completely Different Engine

An important detail gets lost in most discussions of these cars: the automatic did not get the same engine. Buyers who chose the six-speed automatic received the L99, a 6.2-liter V8 rated at 400 horsepower and equipped with Active Fuel Management, GM’s cylinder deactivation system, along with variable valve timing. The L99 was built to meet fuel economy targets that the LS3 could not, and the tradeoff was twenty-six horsepower and a different set of internal components. For anyone shopping a used 2010 SS as a build platform, that distinction matters considerably.

Zeta Platform, Serious Curb Weight

The other number worth knowing is weight. The fifth-generation Camaro rode on GM’s Zeta rear-drive architecture, shared with the Pontiac G8 and later the Chevrolet SS, and it was a substantial car by pony car standards at roughly 3,860 pounds in SS manual form. That mass is exactly why builds like this one exist. A heavy car with a stiff structure is a poor candidate for chasing lap times and an excellent candidate for making enormous straight-line power, because the chassis can absorb it and the weight helps put it down.

Turning 426 Horsepower Into Fifteen Hundred

Getting from a 426-horsepower factory rating to a claimed 1,500 at the rear wheels means leaving almost nothing original inside the engine. Builds at that level typically involve a forged rotating assembly, often a displacement increase beyond 6.2 liters, upgraded valvetrain and cylinder heads, and substantial boost from either a large single turbo, a twin-turbo arrangement, or a positive-displacement supercharger. Fuel systems move to E85 or race fuel with dramatically increased injector capacity, and the engine management gets replaced outright. By the end, the factory LS3 exists mainly as a family name.

Rear Wheel Horsepower Is Not Crank Horsepower

The distinction between rear-wheel and crank horsepower is worth pausing on, because it is routinely blurred. A number measured at the rear wheels on a chassis dyno has already lost energy to the transmission, driveshaft, differential, axles, and tires. Depending on the drivetrain, that loss commonly runs somewhere in the range of fifteen to twenty percent. A car claiming 1,500 at the wheels is therefore making meaningfully more than that at the crankshaft, which puts this build well into territory that professional drag racing occupied not so long ago.

Why the Body Had to Change Too

All of that is academic if the power cannot reach the pavement, which is precisely why this Camaro wears a full widebody conversion instead of a simple wheel and tire upgrade. Factory fender wells physically cannot accommodate tires wide enough to handle four-digit horsepower, so the fenders themselves get widened. Drag radials in the sizes required for this kind of power simply will not fit under stock sheet metal, and running anything narrower turns every launch into an expensive tire-smoking demonstration rather than a pass.

The Driveline Behind the Engine

Behind the engine, everything else has to be reconsidered as well. The stock TR6060, capable as it is, was not designed for this, so builds at this level move to a built manual, a race-prepared automatic, or a purpose-built transmission entirely. The driveshaft gets replaced with a larger-diameter unit, the rear differential is reinforced or swapped, and the axles are upgraded to handle shock loading at the hit. Suspension geometry gets revised to control squat and plant the rear tires, and the brakes have to grow to match a car that now accelerates far harder than it originally did.

The Sound Arrives Before the Spec Sheet

Owners of cars like this consistently report the same thing: the sound changes people’s minds before the horsepower figure ever comes up. A heavily built LS under boost produces a fundamentally different soundtrack than anything that rolled off the Oshawa assembly line, with a sharper crack on the overrun and an intake note that becomes physically felt at full throttle. The reworked bodywork gets attention in a parking lot. The engine gets attention from three blocks away.

Where LS Power Like This Tops Out

The honest caveat on any build at this level is reliability. Modern LS architecture has proven repeatedly that four-digit horsepower is achievable, but survivability depends entirely on the quality of the build and the discipline of the tune. A stock-based rotating assembly is not designed to withstand the cylinder pressures a 1,500-horsepower pull generates, and the difference between a car that makes the number once on a dyno and one that makes it repeatedly on the street is measured in forged components, cooling capacity, fuel quality, and a tuner who knows when to stop. This one was reportedly reworked front to back, which is the only approach that actually works.

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