Car Specs

1975 Buick Regal Hardtop Coupé

Information

Buick

Quick Facts

Chassis Code: 4A

Build Start: 1975

Available in other variants

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Specifications

General

Build Start: 1975
Model Variant: 4A
Chassis Code: 4A

Dimensions

Fuel Tank Capacity: 83litres
Wheelbase: 2845mm
Track/tread (rear): 1542mm
Width: 2007mm
Kerb weight: 1755kg
Track/tread (front): 1562mm
Length: 5385mm
Height: 1354mm

Body Details

Body Type: 4/5 seater fixed-head coupé

Engine Details

Engine Manufacturer: GM
Capacity: 3.8 litre (3791cc)
Bore/stroke ratio: 1.12
Specific output(Net): 21.6 kW/litre29.4 ps/litre, 29 bhp/litre0.48 bhp/cu in
Engine Construction: cast iron block & head
Compression Ratio: 8:1
Engine Coolant: Water
Aspiration: Normal
Engine Position: front
Top Gear Ratio: 1
Engine Type: naturally aspirated petrol
Cylinders: V 6 in 90° vee
Bore × Stroke: 96.52 × 86.36mm
Specific torque(Net): 62.52 Nm/litre, 0.76 ft·lb/cu3
Sump: wet sumped
Crankshaft Bearings: 4
Catalytic converter: Y
Engine Layout: longitudinal
Gearbox: 3 speed manual
Final Drive Ratio: 2.73

Performance

maximum power output(Net): 112 PS (110 bhp) (82 kW)at 4000 rpm
Power-to-weight ratio: 63.55 PS/tonne (1000 kg)
Drive Wheels: rear wheel drive
maximum torque(Net): 237 Nm (175 ft·lb) (24.2 kgm)at 2000 rpm
Weight-to-power ratio: 21.4kg/kW

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Fuel Consump.

Fuel system: 1 Rochestrer carburettor

Chassis & Geomtry

Length:Wheelbase Ratio: 1.89

Brakes

bmep (brake mean effective pressure): 785.6kPa
Front Brake Diameter: 279mm
Brakes F/R: VeDi/Dr

Wheels & Tyres

Wheel Size Rear: 15x6
Tyres Rear: GR78-15
Wheel Size Front: 15x6
Tyres Front: GR78-15

Other

Model code: J57
RAC rating: 34.7
Valve Gear: overhead valve (OHV), 2 valves per cylinder, 12 valves in total
Unitary Capacity: 631.83cc
Number of doors: 2

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