Pontiac Firebird Formula (1981) fixed-head coupé - technical specifications of 1981 Pontiac Firebird Formula

Pontiac Firebird Formula

(1981 model)

Brief specs of 1981 Pontiac Firebird Formula

2-door 2+2-seater fixed-head coupé, petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 5013 cm³ / 305.9 cu in / 305.9 cu in, 108.1 kW / 145.0 hp / 145.0 hp @ 3800 rpm / 3800 rpm / 3800 rpm, 324.0 N·m / 239.0 lb·ft / 239.0 lb·ft @ 2400 rpm / 2400 rpm / 2400 rpm, manual 4-speed transmission, rear wheel drive, 160 km/h / 99 mph / 99 mph top speed

Marque (make)	Pontiac	Issued from	1981
Model	Firebird Formula	Issued until
Serie	Firebird	Number made
Model family		Body construction
Model code		Body designation
Manufacturer	Pontiac	Country	US

Marque (make)

Pontiac

Issued from

1981

Model

Firebird Formula

Issued until

Serie

Firebird

Number made

Model family

Body construction

Model code

Body designation

Manufacturer

Pontiac

Country

Base platform		Number of doors	2
Bodywork type	fixed-head coupé	Number of seats	2+2
Bodywork designer		Cargo capacity (volume)
Passenger space (volume)		Max. cargo capacity (volume)

Base platform

Number of doors

Bodywork type

fixed-head coupé

Number of seats

2+2

Bodywork designer

Cargo capacity (volume)

Passenger space (volume)

Max. cargo capacity (volume)

Length	5032 mm / 198.1 in / 198.1 in	Total (curb) weight	1542 kg / 3400 lb / 3400 lb
Width	1854 mm / 73.0 in / 73.0 in	Dry weight
Height	1252 mm / 49.3 in / 49.3 in	Load capacity
Wheelbase	2748 mm / 108.2 in / 108.2 in	Gross (max.) weight
Track front	1557 mm / 61.3 in / 61.3 in	Towing weight
Track rear	1524 mm / 60.0 in / 60.0 in	Weight distribution (front)
Ground clearance	117 mm / 4.6 in / 4.6 in	Fuel capacity	80 l / 17.5 UK gal / 21.0 US gal
Length/wheelbase ratio	1.83

Length

5032 mm / 198.1 in / 198.1 in

Total (curb) weight

1542 kg / 3400 lb / 3400 lb

Width

1854 mm / 73.0 in / 73.0 in

Dry weight

Height

1252 mm / 49.3 in / 49.3 in

Load capacity

Wheelbase

2748 mm / 108.2 in / 108.2 in

Gross (max.) weight

Track front

1557 mm / 61.3 in / 61.3 in

Towing weight

Track rear

1524 mm / 60.0 in / 60.0 in

Weight distribution (front)

Ground clearance

117 mm / 4.6 in / 4.6 in

Fuel capacity

80 l / 17.5 UK gal / 21.0 US gal

Length/wheelbase ratio

1.83

Drag coefficient (Cd, Cx, Cw)		Frontal area (A)	1.97 m² / 21.2 sq ft / 21.2 sq ft (est.)
Aerodynamic coefficient (Cd×A)		Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Drag coefficient (Cd, Cx, Cw)

Frontal area (A)

1.97 m² / 21.2 sq ft / 21.2 sq ft (est.)

Aerodynamic coefficient (Cd×A)

Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine Code		Total number of cylinders	8
Engine Type	V engine	Total number of valves	16
Engine Manufacturer	GM	Valves per cylinder	2
Engine construction	cast iron block & head	Bore	95.0 mm / 3.74 in / 3.74 in
Fuel	petrol (gasoline)	Stroke	88.4 mm / 3.48 in / 3.48 in
Fuel details		Bore/Stroke ratio	1.07
Fuel supply	1 Ro M4MC carb	Engine displacement	5013 cm³ / 305.9 cu in / 305.9 cu in
Engine Main bearings	5	Unitary capacity	626.63 cm³/cylinder / 38.239 cu in/cylinder / 38.239 cu in/cylinder
Cam Design	OHV (overhead valve, I-head)	Compression ratio	8.6 : 1
Sump		Max. output power	108.1 kW / 145.0 hp / 145.0 hp at 3800 rpm / 3800 rpm / 3800 rpm
Aspiration	natural	Max. torque	324.0 N·m / 239.0 lb·ft / 239.0 lb·ft at 2400 rpm / 2400 rpm / 2400 rpm
Compressor type	N/A	Maximum rpm	4000 rpm / 4000 rpm / 4000 rpm
Intercooler	no	Max. net output (power at the wheels)	43.2 kW / 58.0 hp / 58.0 hp (est.)
Coolant	water	Specific output	21.6 kW/l / 0.474 bhp/cu in / 0.474 bhp/cu in
Catalytic converter	yes	Specific torque	64.6 N·m/l / 0.57 lb·ft/cu in / 0.57 lb·ft/cu in

Engine Code

Total number of cylinders

Engine Type

V engine

Total number of valves

Engine Manufacturer

Valves per cylinder

Engine construction

cast iron block & head

Bore

95.0 mm / 3.74 in / 3.74 in

Fuel

petrol (gasoline)

Stroke

88.4 mm / 3.48 in / 3.48 in

Fuel details

Bore/Stroke ratio

1.07

Fuel supply

1 Ro M4MC carb

Engine displacement

5013 cm³ / 305.9 cu in / 305.9 cu in

Engine Main bearings

Unitary capacity

626.63 cm³/cylinder / 38.239 cu in/cylinder / 38.239 cu in/cylinder

Cam Design

OHV (overhead valve, I-head)

Compression ratio

8.6 : 1

Sump

Max. output power

108.1 kW / 145.0 hp / 145.0 hp at 3800 rpm / 3800 rpm / 3800 rpm

Aspiration

natural

Max. torque

324.0 N·m / 239.0 lb·ft / 239.0 lb·ft at 2400 rpm / 2400 rpm / 2400 rpm

Compressor type

N/A

Maximum rpm

4000 rpm / 4000 rpm / 4000 rpm

Intercooler

Max. net output (power at the wheels)

43.2 kW / 58.0 hp / 58.0 hp (est.)

Coolant

water

Specific output

21.6 kW/l / 0.474 bhp/cu in / 0.474 bhp/cu in

Catalytic converter

yes

Specific torque

64.6 N·m/l / 0.57 lb·ft/cu in / 0.57 lb·ft/cu in

Transmission type	manual	Number of gears	4
Wheel drive	rear wheel drive	Top gear (drive) ratio	1
		Final gear (drive) ratio	3.42

Transmission type

manual

Number of gears

Wheel drive

rear wheel drive

Top gear (drive) ratio

Final gear (drive) ratio

3.42

Acceleration 0-50 mph (80 km/h)	Top (maximal) speed	160 km/h / 99 mph / 99 mph
Acceleration 0-60 mph (97 km/h)	Power-to-weight ratio	94.0 kW/ton / 71.2 bhp/ton / 71.2 bhp/ton
Acceleration 0-100 km/h	Fuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)	Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in top	Fuel consumption, Mixed (combined)
Standing ¼mile time	Fuel consumption, Euro
Standing kilometer time	CO₂ emissions
	Range

Acceleration 0-50 mph (80 km/h)

Top (maximal) speed

160 km/h / 99 mph / 99 mph

Acceleration 0-60 mph (97 km/h)

Power-to-weight ratio

94.0 kW/ton / 71.2 bhp/ton / 71.2 bhp/ton

Acceleration 0-100 km/h

Fuel consumption, City (urban)

Acceleration 0-100 mph (160 km/h)

Fuel consumption, Road (extra-urban)

Acceleration 80-120 km/h (50-70 mph) in top

Fuel consumption, Mixed (combined)

Standing ¼mile time

Fuel consumption, Euro

Standing kilometer time

CO₂ emissions

Range

Engine location	front	Engine alignment	longitudinal
Steering	recirculating ball VPAS	Steering details
Turns lock-to-lock	2.41	Turning circle	12.6 m / 41.3 ft / 41.3 ft
Suspension front	Independent, Wishbone (A-arm, control arm), Coil springs, Anti-roll (anti-sway) bar (ARB)	Suspension rear	Live axle, Semi-elliptic leaf springs, Anti-roll (anti-sway) bar (ARB)
Wheels front		Wheels rear
Tyres front	P225/70 R 15	Tyres rear	P225/70 R 15
Brakes front	ventilated disc	Brakes rear	drum
Brake diameter front	279 mm / 11.0 in / 11.0 in	Brake diameter rear
Brakes details	servo-assisted	Braked area

Engine location

front

Engine alignment

longitudinal

Steering

recirculating ball VPAS

Steering details

Turns lock-to-lock

2.41

Turning circle

12.6 m / 41.3 ft / 41.3 ft

Suspension front

Independent, Wishbone (A-arm, control arm), Coil springs, Anti-roll (anti-sway) bar (ARB)

Suspension rear

Live axle, Semi-elliptic leaf springs, Anti-roll (anti-sway) bar (ARB)

Wheels front

Wheels rear

Tyres front

P225/70 R 15

Tyres rear

P225/70 R 15

Brakes front

ventilated disc

Brakes rear

drum

Brake diameter front

279 mm / 11.0 in / 11.0 in

Brake diameter rear

Brakes details

servo-assisted

Braked area

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