Added to CN roster when London & Port Stanley Railway was acquired in Jan 66.
Trucks: B-B Flexicoil
Engine: 12-567C, 1310 hp
Gear ratio: 63:14
Maximum speed: 60 mph
Operating weight (lbs.): 162,000
Tractive effort (lbs.): 28,000
Length: 59′ – 2″
| Road no. | Class | Build date | Builder’s no. | Order no. | Former road no. | Retired | Notes / disposition |
| 991 | GR-12za | Sep 55 | A-831 | C-236 | London & Port Stanley L-4 | 1976 | Shipped to Newfoundland in 1978 as a parts source, scrapped |
| 992 | GR-12za | Jul 57 | A-1324 | C-236 | London & Port Stanley L-5 | 1976 | Shipped to Newfoundland in 1978 as a parts source, scrapped |