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Engine | | V 12 | V 12 (60º vee) | Straight 4 | |
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Valve train | Double overhead camshaft (per bank) | Double overhead camshaft (per bank) | Single overhead camshaft | Single overhead camshaft | |
|
Valves | 4 valves per cylinder
24 total valves | 3 valves per cylinder
36 total valves | 2 valves per cylinder
24 total valves | 4 valves per cylinder
16 total valves | |
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Displacement | 244 cu in | 242 cu in | 276 cu in | 122 cu in | |
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Bore x Stroke | 4 in x 3 in
1.28 ratio | 3 in x 3 in
1.08 ratio | 3 in x 3 in
1.24 ratio | 3 in x 4 in
0.93 ratio | |
|
Compression ratio | | 11.0:1 | | 10.00:1 | |
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Maximum power | 455 hp @ 7800 rpm | 450 hp @ 8000 rpm | 340 hp @ 7000 rpm | 139 hp @ 6400 rpm | |
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Maximum torque | 332 ft.lb @ 7250 rpm | | | 130 ft.lb @ 3800 rpm | |
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Maximum RPM | 9400 | | | | |
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Fuel | Petrol | | Petrol | Petrol | |
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Construction | Aluminium block &
Aluminium head | Light alloy block &
Light alloy head | Light alloy block &
Light alloy head | Cast iron block &
Light alloy head | |
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Coolant | | | | Water | |
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Sump | Dry sumped | | | Wet sumped | |
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Code | | | | 131 AR.000 | |