Southern Pacific Class P-8

Southern Pacific Class P-8
Type and origin
Power typeSteam
BuilderBaldwin Locomotive Works
Build date1921
Total produced15
Specifications
Configuration:
 • Whyte4-6-2
 • UIC2'C1'
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.73 in (1,854 mm)
Wheelbase75.80 ft (23.10 m) ​
 • Engine35.50 ft (10.82 m)
 • Drivers13 ft (4.0 m)
Axle load60,700 lb (27,500 kg)
Adhesive weight180,000 lb (82,000 kg)
Loco weight297,800 lb (135,100 kg)
Tender weight160,800 lb (72,900 kg)
Total weight457,800 lb (207,700 kg)
Fuel typeOil
Fuel capacity4,000 US gal (15,000 L; 3,300 imp gal)
Water cap.12,000 US gal (45,000 L; 10,000 imp gal)
Firebox:
 • Grate area70.40 sq ft (6.540 m2)
Boiler pressure210 psi (1.4 MPa)
Heating surface:
 • Firebox283 sq ft (26.3 m2)
Cylinder size25 in × 30 in (635 mm × 762 mm)
Valve gearWalschaerts
Performance figures
Tractive effort46,800 lbf (208.18 kN)
Factor of adh.4.15
Career
OperatorsSouthern Pacific Transportation Company
ClassP-8
Numbers2461-2475
PreservedNos. 2467 and 2472
DispositionTwo preserved, remainder scrapped

The Southern Pacific Class P-8 was a class of 4-6-2 "Pacific" type steam locomotives that were built by the Baldwin Locomotive Works for the Southern Pacific Transportation Company in 1921.[1][2]

  1. ^ Dunscomb (1963), p. 163
  2. ^ Solomon (2005), p. 27