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@Willowbilly3
Here's the basic run down on a standard holden 253 v8, just pulled it of the net.
4.2 litre 253 V8 Red Motor (Low compression)
Capacity 253 ci (4146 cc)
OHV V8, 2 valves per cylinder
Two barrel Stromberg WW carburettor
Bore and stroke:92.08 mm x 77.77 mm
Power output 174 bhp (130 kW) at 4400 rpm
Torque 247 lb/ft (325 Nm) at 2400 rpm
Compression ratio:8.0:1

4.2 litre 253 V8 Red Motor (High compression)
Capacity 253 ci (4146 cc)
OHV V8, 2 valves per cylinder
Two barrel Bendix Stromberg WW carburettor
Bore and stroke 92.08 mm x 77.77 mm
Power output 185 bhp (138 kW) at 4400 rpm
Torque 262 lb/ft (353.7 Nm) at 2400 rpm
Compression ratio 9.0:1
 

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