Overview
The classic air-cooled Porsche 911 (1964-1989) was produced across six distinct engine generations, each with its own character and specification. The engine grew from 2.0 litres to 3.2 litres over twenty-five years, the wheelbase was extended, the body was widened, and the chassis was progressively refined. These are the complete specifications for every major variant of the classic air-cooled 911.
Key Dimensions
| Specification |
Short WB (1964-1968) |
Long WB (1969-1973) |
Impact Bumper (1974-1977) |
SC (1978-1983) |
3.2 Carrera (1984-1989) |
| Wheelbase |
2,211 mm |
2,268 mm |
2,272 mm |
2,272 mm |
2,272 mm |
| Overall Length |
4,163 mm |
4,163 mm |
4,291 mm |
4,291 mm |
4,291 mm |
| Overall Width |
1,610 mm |
1,610 mm |
1,610 mm (std) / 1,652 mm (Carrera) |
1,626 mm |
1,626 mm |
| Overall Height |
1,320 mm |
1,320 mm |
1,320 mm |
1,320 mm |
1,320 mm |
| Front Track |
1,337 mm |
1,362 mm |
1,369 mm |
1,369 mm |
1,372 mm |
| Rear Track |
1,317 mm |
1,342 mm |
1,354 mm |
1,379 mm |
1,379 mm |
| Kerb Weight (Coupe) |
1,050 kg |
1,075 kg |
1,120 kg |
1,160 kg |
1,210 kg |
| Fuel Tank |
62 L |
62 L |
80 L |
80 L |
80 L |
| Drag Coefficient |
0.381 |
0.381 |
0.395 |
0.395 |
0.395 |
Engine Specifications
2.0-Litre Flat-Six (1964-1968)
| Specification |
911 / 911L |
911T |
911S |
| Type designation |
901/01, 901/06 |
901/03 |
901/02 |
| Configuration |
Flat-6, SOHC, air-cooled |
Flat-6, SOHC, air-cooled |
Flat-6, SOHC, air-cooled |
| Displacement |
1,991 cc |
1,991 cc |
1,991 cc |
| Bore x Stroke |
80.0 mm x 66.0 mm |
80.0 mm x 66.0 mm |
80.0 mm x 66.0 mm |
| Compression Ratio |
9.0:1 |
8.6:1 |
9.9:1 |
| Power |
96 kW @ 6,100 rpm |
81 kW @ 5,800 rpm |
118 kW @ 6,600 rpm |
| Torque |
174 Nm @ 4,200 rpm |
157 Nm @ 4,200 rpm |
179 Nm @ 5,200 rpm |
| Fuel System |
Solex 40 PI carburettors |
Weber 40 IDA carburettors |
Weber 40 IDS carburettors |
| Valvetrain |
SOHC per bank, 2 valves per cylinder |
SOHC per bank, 2 valves per cylinder |
SOHC per bank, 2 valves per cylinder |
| Redline |
6,800 rpm |
6,500 rpm |
7,200 rpm |
| Oil Capacity |
9.0 L (dry sump) |
9.0 L (dry sump) |
9.0 L (dry sump) |
2.2-Litre Flat-Six (1970-1971)
| Specification |
911T |
911E |
911S |
| Type designation |
911/07 |
911/08 |
911/09 |
| Displacement |
2,195 cc |
2,195 cc |
2,195 cc |
| Bore x Stroke |
84.0 mm x 66.0 mm |
84.0 mm x 66.0 mm |
84.0 mm x 66.0 mm |
| Compression Ratio |
8.6:1 |
9.1:1 |
9.8:1 |
| Power |
92 kW @ 5,800 rpm |
114 kW @ 6,200 rpm |
132 kW @ 6,500 rpm |
| Torque |
177 Nm @ 4,200 rpm |
191 Nm @ 4,500 rpm |
200 Nm @ 5,200 rpm |
| Fuel System |
Weber 40 IDT carburettors |
Bosch MFI (mechanical injection) |
Bosch MFI (mechanical injection) |
2.4-Litre Flat-Six (1972-1973)
| Specification |
911T |
911E |
911S |
| Type designation |
911/57 |
911/52 |
911/53 |
| Displacement |
2,341 cc |
2,341 cc |
2,341 cc |
| Bore x Stroke |
84.0 mm x 70.4 mm |
84.0 mm x 70.4 mm |
84.0 mm x 70.4 mm |
| Compression Ratio |
7.5:1 |
8.0:1 |
8.5:1 |
| Power |
96 kW @ 5,600 rpm |
121 kW @ 6,200 rpm |
140 kW @ 6,500 rpm |
| Torque |
196 Nm @ 3,800 rpm |
206 Nm @ 4,500 rpm |
211 Nm @ 5,200 rpm |
| Fuel System |
Bosch K-Jetronic CIS (late) / Weber carbs (early) |
Bosch MFI |
Bosch MFI |
2.7-Litre Carrera RS (1973)
| Specification |
Value |
| Type designation |
911/83 |
| Displacement |
2,687 cc |
| Bore x Stroke |
90.0 mm x 70.4 mm |
| Compression Ratio |
8.5:1 |
| Power |
154 kW @ 6,300 rpm |
| Torque |
255 Nm @ 5,100 rpm |
| Fuel System |
Bosch MFI (mechanical injection) |
| Kerb Weight (Sport) |
975 kg |
| Production |
1,580 units |
2.7-Litre CIS (1974-1977)
| Specification |
911 (base) |
911S / Carrera |
| Type designation |
911/92 |
911/83 |
| Displacement |
2,687 cc |
2,687 cc |
| Bore x Stroke |
90.0 mm x 70.4 mm |
90.0 mm x 70.4 mm |
| Compression Ratio |
8.0:1 |
8.5:1 |
| Power |
110 kW @ 5,800 rpm |
121-154 kW @ 5,800-6,300 rpm |
| Torque |
235 Nm @ 3,800 rpm |
235-255 Nm @ 4,000-5,100 rpm |
| Fuel System |
Bosch K-Jetronic CIS |
Bosch K-Jetronic CIS / MFI (Carrera) |
| Cylinders |
Nikasil-coated aluminium (known issues) |
Nikasil-coated aluminium (known issues) |
3.0-Litre SC (1978-1983)
| Specification |
SC (1978-1979) |
SC (1980-1981) |
SC (1982-1983) |
| Type designation |
930/04 |
930/09 |
930/10 |
| Displacement |
2,994 cc |
2,994 cc |
2,994 cc |
| Bore x Stroke |
95.0 mm x 70.4 mm |
95.0 mm x 70.4 mm |
95.0 mm x 70.4 mm |
| Compression Ratio |
8.5:1 |
8.6:1 |
9.8:1 |
| Power |
132 kW @ 5,500 rpm |
138 kW @ 5,500 rpm |
150 kW @ 5,500 rpm |
| Torque |
265 Nm @ 4,200 rpm |
267 Nm @ 4,300 rpm |
267 Nm @ 4,300 rpm |
| Fuel System |
Bosch K-Jetronic CIS |
Bosch K-Jetronic CIS |
Bosch K-Jetronic CIS |
| Cylinders |
Alusil aluminium with cast-in liners |
Alusil aluminium |
Alusil aluminium |
| Oil Capacity |
10.5 L (dry sump) |
10.5 L (dry sump) |
10.5 L (dry sump) |
3.2-Litre Carrera (1984-1989)
| Specification |
Value |
| Type designation |
930/20, 930/25 |
| Configuration |
Flat-6, SOHC per bank, air-cooled, dry sump |
| Displacement |
3,164 cc |
| Bore x Stroke |
95.0 mm x 74.4 mm |
| Compression Ratio |
10.3:1 |
| Power |
170 kW @ 5,900 rpm |
| Torque |
285 Nm @ 4,800 rpm |
| Fuel System |
Bosch Motronic DME (digital engine management) |
| Ignition |
Breakerless electronic |
| Redline |
6,520 rpm |
| Oil Capacity |
11.5 L (dry sump) |
| Recommended Oil |
15W-50 or 20W-50 mineral or semi-synthetic |
| Catalytic Converter |
Standard (from 1986 in most markets) |
930 Turbo (1975-1989)
| Specification |
3.0 Turbo (1975-1977) |
3.3 Turbo (1978-1989) |
| Displacement |
2,994 cc |
3,299 cc |
| Bore x Stroke |
95.0 mm x 70.4 mm |
97.0 mm x 74.4 mm |
| Compression Ratio |
6.5:1 |
7.0:1 |
| Power |
191 kW @ 5,500 rpm |
221 kW @ 5,500 rpm |
| Torque |
343 Nm @ 4,000 rpm |
430 Nm @ 4,000 rpm |
| Turbocharger |
KKK K27 |
KKK K27 |
| Intercooler |
No |
Yes (air-to-air) |
| Boost Pressure |
0.8 bar |
0.8 bar |
| Kerb Weight |
1,195 kg |
1,300 kg |
Transmission
| Specification |
901/911 (1964-1971) |
915 (1972-1986) |
G50 (1987-1989) |
| Type |
5-speed manual |
5-speed manual |
5-speed manual |
| Synchromesh |
Porsche system, all forward gears |
Porsche system, all forward gears |
Borg-Warner, all forward gears |
| Clutch |
Single dry plate, cable-operated |
Single dry plate, cable-operated |
Single dry plate, hydraulic |
| Final Drive |
4.43:1 (varies) |
3.88:1 (varies) |
3.44:1 |
| Limited Slip |
Optional |
Optional |
Optional |
Sportomatic (1968-1979)
| Specification |
Value |
| Type |
4-speed semi-automatic with torque converter |
| Operation |
Conventional shift lever, no clutch pedal |
| Torque Converter |
Single-stage, hydraulic |
Suspension
| Component |
Front (1964-1989) |
Rear (1964-1989) |
| Type |
Independent, MacPherson struts |
Independent, semi-trailing arms |
| Springs |
Longitudinal torsion bars |
Transverse torsion bars |
| Dampers |
Telescopic hydraulic (Boge/Bilstein) |
Telescopic hydraulic (Boge/Bilstein) |
| Anti-roll Bar |
Standard (diameter varies by model) |
Optional (standard on S, SC, 3.2) |
Brakes
| Specification |
Early (1964-1968) |
Mid (1969-1977) |
SC/3.2 (1978-1989) |
930 Turbo |
| Front |
Disc, ATE, 282 mm solid |
Disc, ATE, 282 mm ventilated (S) |
Disc, ATE, 282 mm ventilated |
Disc, 304 mm ventilated, 4-piston |
| Rear |
Disc, ATE, 285 mm solid |
Disc, ATE, 290 mm solid |
Disc, ATE, 290 mm solid |
Disc, 309 mm ventilated, 4-piston |
| Servo |
Yes (vacuum) |
Yes |
Yes |
Yes |
| ABS |
No |
No |
No |
No (standard on 964+) |
Steering
| Specification |
Value |
| Type |
Rack and pinion, unassisted (all classic 911s) |
| Turns Lock-to-Lock |
3.0 (early) / 2.7 (late) |
| Turning Circle |
10.3 m |
Wheels and Tyres
| Era |
Standard Wheels |
Standard Tyres |
| 1964-1968 |
4.5J x 15 steel |
165HR15 |
| 1967-1968 (911S) |
5.5J x 15 Fuchs alloy |
185/70HR15 |
| 1969-1973 |
5.5J x 15 (front), 6J x 15 (rear) |
185/70VR15 |
| 1974-1977 |
6J x 15 (front), 7J x 15 (rear) |
185/70VR15 (f), 215/60VR15 (r) |
| 1978-1983 (SC) |
6J x 15 (front), 7J x 15 (rear) |
185/70VR15 (f), 215/60VR15 (r) |
| 1984-1989 (3.2) |
6J x 15 (front), 7J x 15 (rear) |
195/65VR15 (f), 215/60VR15 (r) |
| 930 Turbo |
7J x 16 (front), 8J x 16 (rear) |
205/55VR16 (f), 225/50VR16 (r) |
| Bolt Pattern |
5 x 130 (all models) |
|
Performance (approximate, period road tests)
| Model |
0-100 km/h |
Top Speed |
Standing 400m |
| 911 2.0 (96 kW) |
8.3 s |
210 km/h |
16.0 s |
| 911S 2.0 (118 kW) |
7.4 s |
225 km/h |
15.2 s |
| 911T 2.2 (92 kW) |
9.1 s |
200 km/h |
16.6 s |
| 911S 2.2 (132 kW) |
6.6 s |
230 km/h |
14.8 s |
| 911S 2.4 (140 kW) |
6.2 s |
235 km/h |
14.5 s |
| 2.7 Carrera RS (154 kW) |
5.8 s |
245 km/h |
14.1 s |
| 911 2.7 CIS (110 kW) |
8.5 s |
200 km/h |
16.4 s |
| SC 3.0 (132 kW) |
6.8 s |
225 km/h |
15.0 s |
| SC 3.0 (150 kW) |
6.3 s |
230 km/h |
14.7 s |
| 3.2 Carrera (170 kW) |
5.6 s |
245 km/h |
14.0 s |
| 930 Turbo 3.0 (191 kW) |
5.5 s |
250 km/h |
13.8 s |
| 930 Turbo 3.3 (221 kW) |
5.0 s |
260 km/h |
13.4 s |
Fuel Economy (approximate, mixed driving)
| Model |
L/100 km |
| 911 2.0 |
11.0 |
| 911S 2.0 |
12.5 |
| 911 2.7 CIS |
12.0 |
| SC 3.0 |
12.5 |
| 3.2 Carrera |
12.0 |
| 930 Turbo 3.3 |
15.0 |
Electrical
| Specification |
Early (1964-1967) |
Mid (1968-1977) |
Late (1978-1989) |
| System Voltage |
12V |
12V |
12V |
| Alternator |
Bosch external-fan alternator |
Bosch internal-fan alternator |
Bosch 75-90A alternator |
| Battery |
12V 36Ah |
12V 45Ah |
12V 63Ah |
| Ignition |
Points/condenser |
CDI (Capacitive Discharge) |
Breakerless electronic / Motronic |
Service Intervals
| Service Item |
Interval |
| Engine oil and filter |
5,000-8,000 km |
| Valve clearance check (pre-CIS engines) |
15,000 km |
| Spark plugs |
15,000-30,000 km |
| Air filter |
30,000 km |
| Fan/alternator belt |
Inspect every service, replace as needed |
| Gearbox oil |
40,000 km |
| Brake fluid |
Every 2 years |
| Cam chain tensioner check (3.2) |
Every major service |
Body Styles
Coupe (1964-1989)
| Specification |
Value |
| Seats |
2+2 (rear seats are vestigial) |
| Roof |
Fixed steel |
| Boot (front) |
Approximately 130 L |
Targa (1967-1989)
| Specification |
Value |
| Seats |
2+2 |
| Roof |
Removable panel with fixed roll bar |
| Rear Window |
Folding plastic (1967-1968), fixed glass (1969+) |
| Weight Penalty |
Approximately 30 kg over Coupe |
Cabriolet (1983-1989)
| Specification |
Value |
| Seats |
2+2 |
| Roof |
Power-operated fabric top |
| Weight Penalty |
Approximately 50 kg over Coupe |
Production Numbers (Approximate, All Markets)
| Model |
Years |
Units |
| 911/911S/911L (2.0) |
1964-1968 |
~11,700 |
| 911T/E/S (2.2) |
1969-1971 |
~16,800 |
| 911T/E/S (2.4) |
1972-1973 |
~15,100 |
| 2.7 Carrera RS |
1973 |
1,580 |
| 911/Carrera (2.7 CIS) |
1974-1977 |
~17,400 |
| SC |
1978-1983 |
~58,600 |
| 3.2 Carrera |
1984-1989 |
~70,700 |
| 930 Turbo |
1975-1989 |
~21,500 |