930 vs 964 vs 993

Why We Picked It:

The 911 Turbo, a more potent variant of the Porsche 911, debuted for the 1975 model year. Since its release, the Porsche 911 Turbo (930) has been widely regarded as the best of the 911 lineage. One large turbocharger was attached to the 3.0-liter flat-six engine, churning out 260 horsepower at 5,500 rpm and 254 foot-pounds of torque at 4,000 rpm. The top speed was 155 mph, and it took 5.5 seconds to accelerate from 0 to 60 mph.

In a decade where vehicles were cumbersome, heavy, and sluggish, Porsche released a 2,635-pound car with a monster turbocharged engine in the back with insane turbo lag that turns into a power delivery with no middle ground, making it almost uncontrollable, earning the name the Widowmaker. Also, anti-lock brakes or traction control weren't a thing back then.

The 930 borrowed the dry-sump and single overhead camshaft layout from the 3.0 Carrera RSR from 1974. Pistons made of forged alloy and Nikasil barrels were also included. For supercharging the 930's 2994 cc engine, a KKK 3 LDZ turbo was used. The original pressure was 0.8 bar; in 1976, it was increased to 1.0 bar. The Turbo received a new, improved 4-speed manual transmission (Type 930/30)

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