Vanguard Motor Sales walks through a red 1966 Chevrolet Chevelle, VIN and all, with the kind of detailed, plain-language presentation that’s turned its host into a fan favorite in the comments. It’s a pivotal model year for the Chevelle, the first to offer the 396 big-block as a widely available, regular-production SS option. No dyno pulls, no drag strip — just an honest, thorough look at a genuinely significant piece of GM history. See what makes this one worth a second look.