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Engine | V 12 (180º vee) | V 6 (60º vee) | V 12 (60º vee) | | | |
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Valve train | Double overhead camshaft (per bank) | Single overhead camshaft | Single overhead camshaft | | | |
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Valves | 4 valves per cylinder
48 total valves | 2 valves per cylinder
12 total valves | 2 valves per cylinder
24 total valves | | | |
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Displacement | 121 cu in | 152 cu in | 303 cu in | 244 cu in | 244 cu in | |
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Bore x Stroke | 3 in x 2 in
1.3 ratio | 3 in x 3 in
1.22 ratio | 3 in x 3 in
1.29 ratio | | | |
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Compression ratio | 11:1 | 9.8:1 | 8.5:1 | | | |
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Maximum power | 290 hp @ 11800 rpm | 250 hp @ 7500 rpm | 380 hp @ 7000 rpm | 462 hp | 270 hp | |
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Fuel | Petrol | Petrol | Petrol | | | |
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Construction | Light alloy block &
Light alloy head | Light alloy block &
Light alloy head | Light alloy block &
Light alloy head | | | |