1969 Buick GS 455 Stage I

The Buick GS 455 Stage I is a convertible/cabriolet style motor vehicle with a front positioned engine powering the rear wheels. The 7.5 litre engine is a naturally aspirated, overhead valve, 8 cylinder unit that has an output of 350 bhp (355 PS/261 kW) of power at 4600 rpm, and maximum torque of 691 N·m (510 lb·ft/70.5 kgm) at 2800 rpm. The engine delivers its power through to the wheels via a 3 speed automatic gearbox. The Buick GS 455 Stage I weighs a quoted 1702 kg at the kerb. The Buick GS 455 Stage I is said to be able to achieve a maxiumum speed of 233 km/h (145 mph).

Pictures

Key facts

1969 Buick GS 455 Stage I information summary

What body style?
convertible/cabriolet with 2+2 seats
How long?
5100 mm
How heavy?
1702 kg
What size engine?
7.5 litre, 7458 cm3
How many cylinders?
8, V
How much power?
355 PS / 350 bhp / 261 kW @ 4600 rpm
How much torque?
691 Nm / 510 ft.lb / 70.5 kgm @ 2800 rpm
How quick?
0-60 mph: 5.5 s
How fast?
233 km/h, 145 mph

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1969 Buick GS 455 Stage I data
bodywork
Body type2+2 seater convertible/cabriolet
Number of doors
Designer
dimensions & weights
mminches
Wheelbase 2845 mm 112 inches
Track/tread (front) 1511 mm 59.5 inches
Track/tread (rear) 1499 mm 59 inches
Length 5100 mm 200.8 inches
Width 1918 mm 75.5 inches
Height 1359 mm 53.5 inches
Ground clearance
length:wheelbase ratio 1.79
Kerb weight 1702 kg 3752 lb
Weight distribution
fuel tank capacity
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer GM
Engine code
Cylinders V 8
Capacity 7.5 litre
7458 cc
(455.115 cu in)
Bore × Stroke 109.5 × 99 mm
4.31 × 3.9 in
Bore/stroke ratio 1.11
Valve gear overhead valve (OHV)
2 valves per cylinder
16 valves in total
maximum power output
(Gross)
355 PS (350 bhp) (261 kW)
at 4600 rpm
Specific output
(Gross)
46.9 bhp/litre
0.77 bhp/cu in
maximum torque
(Gross)
691 Nm (510 ft·lb) (70.5 kgm)
at 2800 rpm
Specific torque
(Gross)
92.65 Nm/litre
1.12 ft·lb/cu3
Engine construction
sump
compression ratio 10:1
Fuel system 1 Rochester carburettor
bmep (brake mean effective pressure) 1164.3 kPa (168.9 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 932.25 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph 5.5 s
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile 13.79 s
@ 104.5 mph
Standing kilometre
Maximum speed 233 km/h (145 mph)
Power-to-weight ratio 208.5 PS/tonne (1000 kg)
153.35 kW/tonne (1000 kg)
205.64 bhp/tonne (1000 kg)
0.09 bhp/lb
Weight-to-power ratio 6.52 kg/kW
10.89 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
chassis
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering
turns lock-to-lock
Turning circle
Front suspension
Rear suspension
Wheel size front
Wheel size rear
Tyres front
Tyres rear
Brakes F/R Dr/Dr
Front brake diameter
Rear brake diameter
Braked area
Gearbox 3 speed automatic
Top gear ratio 1
Final drive ratio 3.91
general
Carfolio.com ID44913
Production total
Model code
Model family
RAC rating 59.5
Insurance classification No information available
Tax band No information available
1969 Buick GS 455 Stage I added before December 1995.
Last modified 2013-02-28.