The GP20 and SD24: EMD's Turbocharged Duo

Withers Publishing, softcover, 152 pages, 8.5 x 11 x.25 in., B&W and Color photographs, HO Scale fold-out plans.

The GP20 and SD24 locomotive models can trace their roots to the horsepower race that began in earnest in 1952 when Fairbanks-Morse began promoting its newest creation, the 2,400-horsepower Train Master.

Also, competition outside the industry as motor carriers were increasingly taking away long-haul shipments from railroads caused carriers to look at ways to speed up train schedules - and this translated into more horsepower.

To get that necessary increase in horsepower, EMD installed turbochargers for the first time ever on factory-delivered diesel-electrics. This book discusses the competition between the loco builders and details EMD's first turbocharged models.

Contents:

• 1. Why Turbo charge? pp. 5–8
• 2. New Models, New Features, pp. 9–12
• 3. Specifications, pp. 13–18
• 4. SD24 Production, pp. 19–22
• 5. GP20 Production, pp. 23–28
• 6. Car-body Phases, pp. 29–32
• 7. SD24 Roster, pp. 33–37
• 8. GP20 Roster, pp. 38–44
• 9. SD24s in Service, pp. 45–62
• 10. GP20s in Service, pp. 63–90
• 11. Secondhand SD24s, pp. 91–98
• 12. Secondhand GP20s, pp. 99–104
• 13. Detail Views, pp. 105–112
• 14. Colorful GP20s and SD24s, pp. 113–132
• 15. Bibliography, p. 133
• 16. Index, pp. 134–136
• 17. HO Scale Fold-out Plans, pp. 137–152.