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Chevrolet’s cheapest full-size car could be ordered with the 425-horsepower L72 427, the strongest engine the brand sold in 1966, and only 1,856 of those engines went into the entire big-car line. Muscle Car Campy drives a factory-correct example and then hands the keys to a 454 resto-mod built on the same plain-sedan formula.
This 1969 Chevelle looks like a clean pro-touring build until you notice the pair of 76mm turbochargers feeding an all-aluminum 540-cubic-inch big block. Underneath sits a Roadster Shop chassis and Detroit Speed suspension, because a fifty-six-year-old body shell cannot handle this kind of power on factory bones. The combination points to four figures of horsepower in a car that still wears its original silhouette. Read on to find out what it takes to build one.
Most owners of a 396-badged Chevy big-block have no idea their engine actually displaces 402 cubic inches, a quirk left over from a 1970 bore change Chevrolet never bothered to rebadge for. This full assembly walkthrough builds one from the ground up, torque spec by torque spec, and has already inspired at least one viewer to finally tackle a big-block sitting untouched since 1988. Watch to see exactly how it comes together.