Gillig Transit Coach School Bus
Powertrain

Engine
Configuration
Production
Gillig model code
Engine fitment
Notes
Transmission
Diesel engines
Diesel engines
Diesel engines
Diesel engines
Diesel engines
Diesel engines
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Caterpillar 1160 Caterpillar 3208
636 cu in (10.4 L) V8 636 cu in (10.4 L) turbocharged V8
1970-1982
636D
Rear
-
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Cummins C-160 C-170 C-180 C-190
464 cu in (7.6 L) inline-6
1959-1974 (C160) 1959-1976 (C170/C180/C190)
C-160D C-170D C-180D C-190D
Rear
Distinguished by roof-mounted external air intake (designed by Kenworth)
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Cummins NHH
743 cu in (12.2 L) inline-6 743 cu in (12.2 L) turbocharged inline-6 855 cu in (14.0 L) inline-6 855 cu in (14.0 L) turbocharged inline-6
1959-1973 (743) 1974-1982 (855)
743D 743DT 855D 855DT
Midship
DT=Mid-engine tandem
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Cummins VTF555
555 cu in (9.1 L) V8
1975-1982
VTF555D VTF555DT (tandem)
Rear
VTF555DT is the only rear-engine tandem-axle school bus ever built
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Detroit Diesel 6V53
318 cu in (5.2 L) V6
1971-1977
318D
Rear
-
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Detroit Diesel 6N71
426 cu in (7.0 L) inline-6 426 cu in (7.0 L) turbocharged inline-6
1976-1982
426D 426DT
Midship
426DT=Mid-engine tandem
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Gasoline engines
Gasoline engines
Gasoline engines
Gasoline engines
Gasoline engines
Gasoline engines
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Ford Super Duty V8
534 cu in (8.8 L) OHV V8
1958-1974
534D
Rear
Final gasoline engine used in Transit Coach
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
Hall-Scott 590
590 cu in (9.7 L) SOHC inline-6
1954-1959
590D
Rear
-
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic
International Harvester RD-501 ("Red Diamond")
501 cu in (8.2 L) OHV inline-6
c.1950-1959
501
Rear
-
Spicer 6252 5-speed manual Fuller T905 5-speed manual Fuller RT610 10-speed manual Allison MT643 4-speed automatic Allison MT644 4-speed automatic Allison HT740 4-speed automatic

Question: What powers the Gillig Transit Coach School Bus models?
Answer: Gillig Transit Coach School Bus models 555 and 426 are powered by the Cummins VTF555 V8 and Detroit Diesel 6N71 inline-6, respectively.