When Mecum’s Harrisburg 2026 sale crosses the block on Saturday, July 25th, two very different takes on Chevrolet performance will roll across the same stage. Lot S141 is a 1970 Chevelle LS6, one of the most revered factory muscle cars ever built, while lot S238 is a heavily reimagined 1964 Nova Custom that trades factory correctness for modern horsepower and hot rod flair. Side by side, they make a compelling case study in how collectors approach the same brand from opposite directions.
The Chevelle wears code 19 Tuxedo Black over a black interior and carries its original 454/450-horsepower LS6 big block paired with a Muncie four-speed manual and a 4.10-geared CRW Positraction rear end. Its odometer currently shows 23,071 miles, and the car’s history is unusually well documented: it comes with two original build sheets, one of which is still tucked beneath the front seat, and it is listed in the LS6 Registry. The Chevelle was even displayed at the 2020 Carlisle event marking the LS6’s 50th anniversary. Aside from a single repaint in its correct factory color, the body panels are original, and the car retains its cowl induction hood, split bench seat with headrests, and factory-style 5-spoke SS wheels.
The Nova Custom tells an entirely different story. Finished in a two-tone metallic purple over a black and purple interior, this compact has been transformed into a resto-mod with a 502 cubic-inch big block feeding a 700R4 automatic through a Hurst pistol grip shifter, backed by a Ford 9-inch rear end. The build leans hard into modern engineering and show-car detailing, with rack-and-pinion steering, tubular control arms, front coilovers, a Flaming River steering column, a powder-coated roll cage, and rear wheel tubs. Visual touches include a cowl hood, shaved door handles with remote openers, chrome 17×7 and 18×10-inch American Racing Hopster wheels, chrome bumpers, and a custom hood with included chrome stacks, along with a 3-inch exhaust system featuring remote-controlled cutouts at the headers.
Put the two side by side and the contrast is the whole point. The Chevelle is a matching-numbers-style factory muscle car whose value rests on originality, documentation, and provenance, right down to a build sheet still hiding under the seat. Its LS6 454 and solid-lifter, high-compression engineering represent the ceiling of what Chevrolet’s assembly line offered in 1970, delivered through a driver-focused four-speed manual gearbox. The Nova, on the other hand, has been deliberately moved away from anything resembling its 1964 factory configuration. Its 502 big block, automatic overdrive transmission, coilover suspension, and roll cage reflect decades of aftermarket development rather than period correctness, and its value comes from the quality of the build and personalization rather than how close it stays to the way it left the factory. One car asks to be preserved as history; the other asks to be admired as craftsmanship. Together, they show just how differently two Chevrolets from the muscle car era can be valued, restored, and driven.
Shawn Henry