Builder: English Electric Company at Vulcan Foundry, Newton le Willows (VF).
Engine:  English Electric 12CSVT of 1300KW (1750 hp) at 850 rpm.
Main Generator: English Electric 822/10G.
Traction Motors: English Electric 538/A.
Maximum Tractive Effort: 247 kN (55500 lbf).
Continuous Tractive Effort:  156 kN (35000 lbf) at 13.6 mph.
Power At Rail: 932 kW (1250 hp).
Full Engine Output: 10-79 mph.
Locomotive Brake Type: Straight air & automatic air.
Train Brake Type: Automatic air & vacuum.
Brake Force: 50 tonnes.
Maximum Permitted Speed: 90 mph.
Minimum Radius Curves: 80.47m (4 ch).
Fuel Tank Capacity: 1690 gallons.
Weight: 108.4 tonnes.
Dimensions: Length 18.75 m (61 ft 6 in). Width 2.74 m (9 ft). Height 3.94 m (12 ft 11 in).
Wheel Diameter: 1092 mm (3 ft 7 in).
Wheelbase: 15.44 m (50 ft 8 in).
Bogie Centres: 11.33 m (37 ft 2 in).
Multiple Working: Blue Star Coupling Code.
Route Availability: 5.
Works Number: 3511/D942.
Year Into Service: 1965.
Last Classified Repair: 03.84 BREL (British Rail Engineering Ltd) Crewe Works (ZC).
Last Allocated Depot: Cardiff Canton (CF).