911 1974-1989 2.7 3.0 3.2

911′s are one of the world’s most modifiable cars due to commonality of components during its production and this is one reason why they are so popular. The inherent durability made these the most successful production-based race cars of all time.

One can upgrade the torsion bars, shocks, bushings, anti-roll bars, and brakes for street use, Driver’s Education events, or competition without much effort and every air-cooled engine will interchange, provided the right components are installed.

Here are a few links to help you find our products to upgrade your 911.

Below is a brief overview of the first few generations of these superb air-cooled cars and their features as well as differences. Contact us for more details and consultation about improving every aspect of these cars.

’74 to ’77 911 2.7 and Carrera

The mid-year car suspensions differed from their predecessors with a simpler, under-body front swaybar and stiffer aluminum rear trailing arms with larger bearings. Brakes were either “M” calipers front & rear, front aluminum ”S” calipers, or the later iron ”A” front calipers for improved pedal feel.

Mid-year 911′s respond very nicely to suspension upgrades as well as engine transplants using later 3.0, 3.2 and 3.6 engines. All of these cars should get a front oil cooler to control engine temperatures as that was the root cause for all the 2.7 engine issues. These are all pretty light cars and provide excellent performance with the right package of suspension, brakes, and engine configuration.

’78 to ’89 911SC (including Carrera 3.0) and Carrera 3.2

The 911SC & and Carrera 3.2′s are considered to be the most durable and reliable cars that Porsche ever built. These robust autos have rugged engines and transmissions to match the already tough suspension and braking systems. 911SC’s had mildly tuned, 180HP 3.0 engines with CIS fuel injection that would last beyond 200K miles provided a good maintenance regimen was followed. The 3.2 litre Carrera engines, 217HP to 231HP, were similarly understressed and very durable. Both cars cames with auxilliarly oil cooling systems that helped contain oil temperatures, something very critical for maximum engine life. Both 3.0 and 3.2 engines respond very nicely to exhaust modifications* and the 3.2 Motronic versions perform better with custom performance software to enhance throttle response and mid-range power.
The 911SC and early 3.2 Carrera’s used an improved version of the 915 transmission while the later Carrera’s, ’87-’89, had the smoother, stronger G-50 gearboxes.

Both cars had similar suspension systems with slightly larger swaybars found on the Carrera along with thicker brake rotors for better pad life.

SC’s & Carrera’s are excellent candidates for upgrades to the suspension, engine, including close-ratio gears for much improved acceleration. Once again, specific changes depend on how the car is driven and what its used for but there are a wide range of excellent products to enhance the performance of these cars.

The Euro-only Carrera 3.0, “76-’77, shares many components with the 911SC except the engine. This is a 200HP 3.0, CIS fuel injected motor based on the early 3.0 Turbo.