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AMTK 707 (P30CH) Autotrain, Sanford, FL (22737450251).jpg
Amtrak 707 on the Auto Train in 1987
Type and origin
Power type Diesel-electric
Builder GE Transportation Systems
Model P30CH
Build date 1975-76
Total produced 25
 • AAR C-C
 • UIC Co′Co′
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Trucks GE 3-axle floating bolster
Wheel diameter 40 in (1,016 mm)
Minimum curve 29° (199.70 ft or 60.87 m)
Wheelbase 46 ft 0 in (14.02 m) locomotive
13 ft 7 in (4.14 m) truck
Length 72 ft 4 in (22.05 m)
Width 10 ft 8.8 in (3.27 m)
Height 15 ft 4 12 in (4.69 m)
Axle load 64,333.33 lb (29,181 kilograms)
Adhesive weight 100%
Loco weight 386,000 lb (175,087 kg)
Fuel type Diesel
Fuel capacity 3,600 US gal (14,000 L; 3,000 imp gal)
Lubricant cap. 380 US gal (1,400 L; 320 imp gal)
Water cap 385 US gal (1,460 L; 321 imp gal)
Sandbox cap. 56 cu ft (1.59 m3)
Prime mover GE 7FDL16
RPM range 450-1050
Engine type V16 diesel
Aspiration Turbocharged
Displacement 175.2 liters (10,690 cu in)
Alternator GTA11
Traction motors 6x GE 752 DC traction motors
Cylinders 16
Cylinder size 10.95 liters (668 cu in)
Transmission 75:28 gearing
MU working Yes
Train heating Locomotive-supplied head-end power rated at 750 kW (1,010 hp)
Loco brake Pneumatic (26L) & Dynamic
Train brakes Pneumatic
Performance figures
Maximum speed 103 miles per hour (165.76 km/h)
Power output 3,000 hp (2,200 kW)
Tractive effort 58,980 lbf (262 kN) @ 14.7 mph (23.7 km/h)
Operators Amtrak, some leased to SP
Nicknames Pooch
Last run 1992
Disposition All scrapped

The GE P30CH (nicknamed "Pooch" because of the similarity of the designation) was one of the first brand-new diesel-electric locomotives built for Amtrak by General Electric during Amtrak's early years. The design was based on the GE U30C, but had a cowl carbody like its EMD competitors. Amtrak operated them from 1974–1992.

Amtrak ordered 25 P30CHs in 1974, following up on its order of 40 EMD SDP40Fs in 1973. The P30CH was the first Amtrak diesel locomotive built from the factory to offer HEP (head end power) in the form of 2 Detroit Diesel generator sets, each rated at 375 kW. The six-axle P30CHs, which cost Amtrak $480,000 each,[3]:105 were plagued with mechanical problems and were never very popular with crews or Amtrak management. In the mid-1970s Amtrak moved away from six-axle designs in favor of four-axle units; four-axle locomotives could better handle routes with numerous curves.[4]:34 Ultimately the four-axle EMD F40PHs quickly began to supersede the P30CHs soon after their introduction by Amtrak.

Amtrak leased fifteen to the Southern Pacific Railroad in 1978 for use on the Peninsula Commute between San Francisco and San Jose, California.[5]:12 Caltrans leased several P30CHs for its abortive OxnardLos Angeles "CalTrain" commuter service.[6] In the later years of their Amtrak careers, the locomotives were used regularly into the mid-1980s on the Sunset Limited and Auto Train routes.[3]:105 They had their final runs in late 1992; none were preserved.[4]:34

Original owners[edit]

GE produced 25 P30CHs, all of which were delivered to Amtrak:[7]

Original Owner Road Numbers Quantity Builder Numbers Notes
Amtrak 700-724 25 40694-40718 All scrapped


  1. ^ "Archived copy". Archived from the original on 2015-04-29. Retrieved 2015-04-29. 
  2. ^
  3. ^ a b Solomon, Brian (2004). Amtrak. Saint Paul, Minnesota: MBI. ISBN 978-0-7603-1765-5. 
  4. ^ a b Glischinkski, Steve (September 1994). "Cowls". Pacific Rail News. No. 370. pp. 31–37. Archived from the original on 2014-09-12. 
  5. ^ "Amtrak GEs Take over Espee Commuter Work". Pacific RailNews. Vol. 18 no. 7. July 1978. pp. 12–13. Archived from the original on 2014-09-12. 
  6. ^ Caldwell, Charles M. (February 1983). "Southern Pacific". Pacific RailNews. Vol. 22 no. 2. p. 12. Archived from the original on 2014-09-11. 
  7. ^ Komanesky, John (October 29, 2010). "GE U30 & P30CH roster". The Diesel Shop. Retrieved 2013-02-07. 

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