Image Credit: Autotopia LA / YouTube.Few American cars are as instantly recognizable as a 1957 Chevrolet Bel Air. The fins, acres of chrome, and unmistakable profile have made it a hot-rodding favorite for generations.That popularity also means finding a fresh way to build one isn't particularly easy. RestoMods has taken a relatively restrained approach with its latest project, leaving the Bel Air's famous body largely alone while thoroughly updating what sits underneath it.Featured on the Autotopia LA YouTube channel, the Tuxedo Black '57 looks close to stock until you notice its lowered stance and larger wheels. Under the hood is where things get really serious, with a Blueprint Engines 502-cubic-inch big-block V8 producing a claimed 633 horsepower.The car is RestoMods' RM35 sweepstakes build, designed primarily as a powerful cruiser rather than an all-out Pro Touring machine. That explains why the upgrades focus as heavily on comfort and drivability as they do on horsepower.A 502 Big Block Provides The MuscleImage Credit: Autotopia LA / YouTube.The centerpiece is that fuel-injected 502, backed by a built 4L80 automatic transmission. Power heads to a narrowed Currie nine-inch rear axle, giving the drivetrain the hardware needed to cope with the big block's substantial torque.Rather than replacing the entire foundation with a modern aftermarket chassis, RestoMods retained and refreshed the original frame. Ridetech components and air suspension were installed at both ends, including a weld-in four-link setup at the rear.Wilwood brakes provide additional stopping power, while American Racing Salt Flat wheels measure 18x8 inches up front and 20x10 at the rear. Those rear wheels wear meaty 295/40 tires, though the big block still looks capable of overwhelming them.The Body Was Mostly Left AloneImage Credit: Autotopia LA / YouTube.RestoMods resisted the temptation to redesign Chevrolet's original sheet metal. The black paint and extensive factory-style chrome remain the visual focus, joined by the gold-colored trim that was part of the Bel Air's distinctive appearance.There is one clever alteration hiding at the back. The original trunk-mounted license plate arrangement was removed in favor of a Nomad-style rear bumper center section, relocating the plate lower down and cleaning up the trunk lid.The result doesn't immediately announce itself as a heavily modified car. Its stance gives the game away, yet much of what made the '57 Bel Air an icon is still intact.Modern Comfort Without Losing The '50s LookImage Credit: Autotopia LA / YouTube.The cabin follows a similar philosophy, retaining the original dashboard design while quietly adding modern equipment. Dakota Digital gauges, Bluetooth audio, Vintage Air climate control, and a tilt steering column make the Bel Air easier to live with.A TMI Pro-Series bench keeps the traditional seating layout while adding extra support, an armrest, storage, and cupholders. Even the steering wheel resembles the factory design, only reduced to a more manageable 15 inches.Autotopia LA's drive also revealed that the car was still being shaken down, with an apparent oxygen-sensor issue causing some rough running during filming. Even so, the Bel Air rode comfortably, stopped confidently, and had no trouble spinning its rear tires when asked.That's arguably the appeal of this build. It still looks unmistakably like a 1957 Bel Air, only now there's a 633-hp big block waiting behind all that chrome.If you want more stories like this, follow Guessing Headlights on Yahoo so you don't miss what's coming next.