porsche / Spec Sheet / 24 Mar 2026

Porsche 911 Classic Air-Cooled, Full Specifications

Last updated 24 Mar 2026

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

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