Performance data and technical specs are based on the model from 1949.
Acceleration (0-100 km/h): 12.2 sec.
Topspeed (mph): 113
Acceleration (0-60 mph): 12.2 sec.
Cylinders: S4
Displacement: 2443 ccm (2.4 l)
Engine Power: 104 hp (78 kw)
Gears: Manual, 4-speed
Weight: 940kg (2073 lbs)
Weight/Power ratio: 9.04 kg/hp
Power/Displacement ratio: 42.57 hp/l
Metric performance data, Healey Silverstone compared with similar cars:
| Healey Silverstone | Allard J1 | Aston Martin DB2 | Frazer Nash Targa Florio | |
| Topspeed (km/h): | 182 | 137 | 177 | 183 |
| Acceleration (0-100 km/h): | 12.2 | 14.2 | 12.4 | 10.4 |
| Power: | 104 hp (78 kw) | 100 hp (75 kw) | 105 hp (78 kw) | 100 hp (75 kw) |
| Weight (kg): | 940 | 1143 | 1207 | 1067 |
English performance data, Healey Silverstone compared with similar cars:
| Healey Silverstone | Allard J1 | Aston Martin DB2 | Frazer Nash Targa Florio | |
| Topspeed (mph): | 113 | 85 | 110 | 114 |
| Acceleration (0-60 mph): | 12.2 | 14.2 | 12.4 | 10.4 |
| Power: | 104 hp (78 kw) | 100 hp (75 kw) | 105 hp (78 kw) | 100 hp (75 kw) |
| Weight (lbs): | 2073 | 2520 | 2661 | 2353 |
