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Engine | Straight 4 | Straight 4 | V 12 (60º vee) | V 8 (90º vee) | |
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Valve train | Double overhead camshaft (per bank) | Single overhead camshaft | Double overhead camshaft (per bank) | Double overhead camshaft (per bank) | |
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Valves | 4 valves per cylinder
16 total valves | 2 valves per cylinder
8 total valves | 4 valves per cylinder
48 total valves | 4 valves per cylinder
32 total valves | |
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Displacement | 122 cu in | 67 cu in | 365 cu in | 146 cu in | |
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Bore x Stroke | 3 in x 4 in
0.93 ratio | 3 in x 2 in
1.44 ratio | | 4 in x 2 in
2.52 ratio | |
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Compression ratio | 10.7:1 | 8.88:1 | | | |
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Maximum power | 215 hp @ 7000 rpm | 60 hp @ 6000 rpm | 700 hp | | |
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Maximum torque | | | 738 ft.lb | | |
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Maximum RPM | | | | 18000 | |
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Fuel | Petrol | Petrol | Petrol | Petrol | |
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Main bearings | | 5 | | | |
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Construction | Cast iron block &
Light alloy head | | Aluminium block &
Aluminium head | | |
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Coolant | Water | Water | | | |
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Sump | Wet sumped | | | | |
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Code | 131 AR.000 | 128 | | 056 | |