The 911 S, introduced in 1967, was a potent Porsche and a marked improvement over its less-powerful 1966 predecessor. Porsche’s new all-aluminum, single-overhead-cam, dry-sumped, 2.0-liter engine boasted a forged steel crankshaft, forged light alloy pistons, and soft nitride-forged steel connecting rods. Breathing through a larger 42-millimeter intake, 38-millimeter exhaust valves, and a pair of 40IDS Weber triple-throat carburetors, the Type 901/02 powerplant gave a solid 160 brake horsepower. The 911 S also had upgraded brakes with ventilated discs, Koni shocks, a rear anti-roll bar, and a set of handsome and lightweight Fuchs forged alloy wheels.
The 911 “Super” was indeed just that – it was capable of reaching 140 mph in fifth gear. By 1967, Porsche owners were winning amateur races on a regular basis. When the SCCA announced a professional racing series for sedans, the hotly competitive Trans-American Sedan Championship, Porsche pounced on a loophole in the rules that allowed it to compete in the Trans-Am’s Under-Two-Liter category. Coming away with the 1967 U2 Series Championship, Porsche proved it was capable of not only defeating rivals like Alfa Romeo and other small sedans and coupes but also larger five-liter Mustangs, Camaros, and Chrysler products as well, especially on tight circuits where nimble handling was paramount.