A 1960 Chevrolet C10 Apache has been transformed into one of the wildest sleeper-style custom trucks to appear on the Autotopia LA YouTube channel. Built by Arizona High Test for an Australian owner named Mark, the weathered Chevy combines original patina with a supercharged Nelson Racing Engines V8 capable of delivering four-figure power.
The truck reportedly began life as an original six-cylinder survivor purchased in Wisconsin. Rather than transport it home, Mark drove the aging pickup across the country to Arizona, where it eventually became the basis for an unusually sophisticated high-performance build.
From the outside, the Apache still looks like a carefully preserved work truck wearing decades of faded black paint. Opening the hood reveals a completely different machine, with handmade metalwork, modern fuel injection, extensive cooling hardware, and a 427-cubic-inch engine topped by a massive Whipple supercharger.
Arizona High Test says the engine produced just under 1,400 horsepower on an engine dyno while running on ethanol-based fuel. During later testing in hot Arizona conditions, the truck delivered 953 horsepower at the wheels and nearly 1,200 lb-ft of torque.
A Nelson Racing V8 Changes Everything
At the center of the build is a Nelson Racing Engines 427 paired with a 3.8-liter Whipple supercharger. The flex-fuel system allows the engine management to adjust for anything from 91-octane gasoline to E85, although the truck was running race-grade E85 during the featured dyno session.
Power is sent through a Hughes 4L80 automatic transmission equipped with a Dice torque converter. A Ford nine-inch rear axle and a custom two-piece aluminum driveshaft complete a drivetrain engineered to survive the engine’s enormous torque output.
Despite its power, the truck was designed to remain usable on public roads rather than functioning solely as a showpiece or drag vehicle. Tall gearing allows it to cruise at approximately 2,100 rpm at 65 mph, while careful throttle inputs reportedly make it surprisingly manageable in ordinary driving.
The Exhaust Is As Complicated As The Engine
Arizona High Test fabricated two-inch primary headers feeding three-and-a-half-inch collectors and an X-pipe. In its quieter setting, exhaust gases pass through mufflers and exit ahead of the rear wheels, giving the truck a relatively restrained configuration for normal driving.
A dashboard switch activates a second route that bypasses the mufflers and sends the exhaust back toward outlets cut into the front fenders. The builders used an existing rusted section of the body for the opening, allowing them to preserve the truck’s authentic finish instead of creating artificial patina around new metalwork.
Modern Hardware Hidden Behind Old-School Details
The Apache rides on a custom Rev chassis with air suspension, sway bars, progressive bump stops, and 14-inch brakes at all four corners. Its 20-inch three-piece wheels were painted to resemble 15-inch steel wheels, complete with period-correct Chevrolet hubcaps and black outer sections designed to visually blend into the tires.
That disguise allowed the builders to install large modern brakes without sacrificing the appearance of a traditional work truck. Firestone 255/45R20 tires are fitted at all four corners, giving the Apache a square setup that looks deliberately modest compared with the power hiding underneath.
The bed floor and surrounding panels were handmade, with the modern fabrication positioned below the original body lines. Air suspension plumbing, fuel lines, and other systems were arranged symmetrically beneath the raised wooden bed, turning the normally hidden underside into one of the cleanest parts of the build.
The Interior Keeps Its Original Character
Much of the cabin remains recognizable as a 1960 Chevrolet, including the original dashboard, glovebox, ashtray, control knobs, and bench seat frame. The seat was restored with new foam and upholstery, while the weathered surfaces were retained to match the exterior.
Dakota Digital RTX instruments provide modern information while mimicking the factory gauge design. The truck also features a Holley Terminator X Max system, Vintage Air climate control, paddle shifters, and a smaller period-style steering wheel mounted with custom hardware.
Even the original location for the behind-seat fuel tank was reused in an unexpected way. Arizona High Test fabricated a replacement tank in that position to hold coolant and ice for the supercharger’s heat exchanger, with the factory-style filler cap now serving the cooling system instead of the fuel system.
Built To Cruise Or Destroy Tires
The owner deliberately chose relatively narrow rear tires because he enjoys controlling traction rather than chasing the quickest possible acceleration. Although the chassis can put down more power than expected, the truck can still produce rolling burnouts whenever its driver becomes less disciplined with the throttle.
That contrast defines the entire Apache. It can cruise comfortably, ride low on air suspension, and pass as a worn survivor from a distance, yet it carries the output of a modern hypercar beneath its handmade engine bay.
Arizona High Test has created a truck that respects its history without being constrained by it. The original paint, trim, hubcaps, and interior details preserve the Apache’s identity, while the supercharged Nelson Racing engine ensures nobody will mistake it for an ordinary farm truck once the throttle opens.