Input (grade 13): They would have been capable of traveling at up to 250 k, and powering a push-pull train of up to nine Mark 5 coaches and a driving van trailer (DVT), similar to the InterCity 225 sets.
Output (grade 10): The locomotive would have been utilised along with a train of up to nine Mark 5 coaches and a DVT, similar to the InterCity 225 sets.