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Type | Roadster | Roadster | Fixed-head coupé | |  |
Seats | 2 | 2 | 2 | |  |
Doors | 2 | 2 | 2 | |
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Power-to-weight | 113.87 hp/ton | 101.84 hp/ton | 105.42 hp/ton | |  |
Specific Output | 0 hp/cu in | 0 hp/cu in | 0 hp/cu in | |
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Engine | Straight 6 | Straight 6 | Straight 6 | |  |
Valve train | Overhead valves | Overhead valves | Overhead valves | |  |
Valves | 2 valves per cylinder
12 total valves | 2 valves per cylinder
12 total valves | 2 valves per cylinder
12 total valves | |  |
Displacement | 253 cu in | 235 cu in | 253 cu in | |  |
Bore x Stroke | 3 in x 4 in
0.8 ratio | 3 in x 4 in
0.77 ratio | 3 in x 4 in
0.8 ratio | |  |
Compression ratio | 8.00:1 | 8.10:1 | 8.00:1 | |  |
Maximum power | 142 hp @ 4000 rpm | 127 hp @ 4000 rpm | 142 hp @ 4000 rpm | |  |
Maximum torque | 230 ft.lb @ 2000 rpm | 210 ft.lb @ 1600 rpm | 230 ft.lb @ 2000 rpm | |  |
Fuel | Petrol | Petrol | Petrol | |  |
Main bearings | 7 | 7 | 7 | |  |
Construction | Cast iron block &
Aluminium head | Cast iron block &
Aluminium head | Cast iron block &
Aluminium head | |  |
Coolant | Water | Water | Water | |  |
Sump | Wet sumped | Wet sumped | Wet sumped | |
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Wheelbase | 102 in | 102 in | 108 in | |  |
Length | 171 in | 171 in | 181 in | |  |
Width | 64 in | 64 in | 66 in | |  |
Height | 49 in | 49 in | 55 in | |  |
Track | front: 53 in
rear: 55 in | front: 53 in
rear: 55 in | front: 53 in
rear: 55 in | |  |
Kerb weight | 2749 lb | 2749 lb | 2970 lb | |  |
Fuel capacity | 20 US Gal | | 20 US Gal | |
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Engine location | Front | Front | Front | |  |
Engine Alignment | Longitudinal | Longitudinal | Longitudinal | |  |
Wheel Drive | Rear wheel drive | Rear wheel drive | Rear wheel drive | |  |
Transmission | 3, Manual
with overdrive
| 3, Manual
with overdrive
| 3, Manual
with overdrive
| |  |
Brakes | front: Drum rear: Drum servo assisted
| front: Drum rear: Drum servo assisted
| front: Drum rear: Drum servo assisted
| |  |
Brake diameter | front: 10 in
rear: 10 in
| | front: 10 in
rear: 10 in
| |
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