Car Specs

1968 Pontiac Executive Sedan 428 Automatic

Information

Pontiac

Quick Facts

Chassis Code: 256

Build Start: 1968

Available in other variants

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Specifications

General

Build Start: 1968
Model Variant: 256
Chassis Code: 256

Dimensions

Wheelbase: 3150mm
Track/tread (rear): 1626mm
Width: 2027mm
Track/tread (front): 1600mm
Length: 5677mm
Height: 1392mm

Body Details

Body Type: 4/5 seater sedan/saloon

Engine Details

Top Gear Ratio: 1
Engine Manufacturer: Pontiac
Capacity: 7 litre (6991cc)
Bore/stroke ratio: 1.03
Sump: wet sumped
Crankshaft Bearings: 5
Catalytic converter: N
Engine Layout: longitudinal
Gearbox: 3 speed automatic
Final Drive Ratio: 3.08
Engine Type: naturally aspirated petrol
Cylinders: V 8 in 90° vee
Bore × Stroke: 104.65 × 101.6mm
Compression Ratio: 10.5:1
Engine Coolant: Water
Aspiration: Normal
Engine Position: front

Performance

Drive Wheels: rear wheel drive

Fuel Consump.

Fuel system: 1 carburettor

Chassis & Geomtry

Length:Wheelbase Ratio: 1.8

Brakes

Brakes F/R: Dr/Dr
Rear brake diameter: 279mm
Front Brake Diameter: 279mm
bmep (brake mean effective pressure): 1150.4kPa

Wheels & Tyres

Wheel Size Front: 14x6JK
Tyres Front: 8.55 x 14
Wheel Size Rear: 14x6JK
Tyres Rear: 8.55 x 14

Other

Model code: 25669
maximum power output(Gross): 380 PS (375 bhp) (280 kW)at 4800 rpm
Specific output(Gross): 40 kW/litre54.4 ps/litre, 53.6 bhp/litre0.88 bhp/cu in
Unitary Capacity: 873.88cc
Number of doors: 4
RAC rating: 54.3
Valve Gear: overhead valve (OHV), 2 valves per cylinder, 16 valves in total
maximum torque(Gross): 640 Nm (472 ft·lb) (65.3 kgm)at 3200 rpm
Specific torque(Gross): 91.55 Nm/litre, 1.11 ft·lb/cu3

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