1967 Shelby 427 S/C Cobra Roadster (CSX3042)
Factory racing heritage defined the ultimate street Cobra when Shelby American created the Semi-Competition (S/C) model. Only 29 authentic S/C examples were completed from unsold competition chassis in the CSX 3000-series, making them among the rarest and most coveted Cobras ever built.
Chassis CSX3042 is one of these original factory S/C cars. The distinctive bodywork featured wide fenders to accommodate racing tires, side-exit exhaust pipes, and competition-inspired proportions.
The S/C designation reflected Shelby’s decision to adapt unfinished competition cars for road use by adding full windshields, electric cooling fans, and inserts in the side exhaust pipes to meet minimal street requirements. These changes made them barely road-legal while preserving their uncompromising race-bred character.
Under the hood sat Ford’s legendary “side-oiler” 427 cubic inch V8, rated at around 485 horsepower in S/C specification (considerably more than the 425-hp street versions). Performance was staggering: period tests recorded a top speed of 185 mph and 0–100–0 mph in just over 13 seconds.
Built as competition cars repurposed at the last moment for the street, the 427 S/C models remain the most desirable of all Cobras, combining near-pure racing performance with only the bare minimum of concessions to road use.
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