US Army tactical truck engines

In the late 1930s the US Army began setting requirements for custom built tactical trucks, winning designs would be built in quantity. As demand increased during WWII some standardized designs were built by other manufactures.[1]

Most trucks had gasoline (G) engines until the early 1960s, when multifuel (M) and diesel (D) engines were introduced. Since then diesel fuel has increasingly been used,[2] the last gasoline engine vehicles were built in 1985.

Most engines have been water-cooled with inline (I) cylinders, but V types (V) and opposed (O) engines have also been used. Three air-cooled engines were used in two very light trucks. Gasoline engines up to WWII were often valve in block design (L-head), during the war more overhead valve (ohv) engines were used, and after the war all new engines (except 1 F-head and 1 Overhead camshaft (ohc)) have been ohv.[3][4][5] All diesel engines have ohv, they can be naturally aspired, supercharged (SC), or turbocharged (TC).

The same engines have been used in different trucks, and larger trucks often have had different engines during their service life. Because of application and evolution, the same engine often has different power ratings. Ratings are in SAE gross horsepower.

The front of an engine is the fan end, the rear is the flywheel end, right and left are as viewed from the rear, regardless of how the engine is mounted in the vehicle. Engines in the tables are water-cooled and naturally aspirated unless noted.[6][7]

American Motors - Kaiser - JeepWillys

Model Power Torque Displacement Fuel Type Used in
AO-4-53
[8] [lower-alpha 1]
16 hp (12 kW)
@3200rpm
30 lbf·ft (41 N·m)
@2100rpm
53 cu in (0.9 L) gas AC O4 M274
AV-108-4
[9]
54 hp (40 kW)
@3600rpm
90 lbf·ft (122 N·m)
@2500rpm
108 cu in (1.8 L) G AC V4 M422(G843)
MB
[10][lower-alpha 2]
54 hp (40 kW)
@4000rpm
105 lbf·ft (142 N·m) 134 cu in (2.2 L) G L-head I4 Willys MB(G503)
Ford GPW(G503)
Ford GPA(G504)
Willys MC(G740)
MD
[11]
72 hp (54 kW)
@4000rpm
114 lbf·ft (155 N·m)
@2000rpm
134 cu in (2.2 L) G F-head I4 M38A1(G758)
Tornado
[12]
132 hp (98 kW)
@4000
198 lbf·ft (268 N·m)
@2000rpm
230 cu in (3.8 L) gas ohc I6 M715(G890)

Caterpillar

Model Power Torque Displacement Fuel Type Used in
3116
[13][14][15]
170 hp (127 kW)
225 hp (168 kW)
290 hp (216 kW)
@2600rpm
430 lbf·ft (583 N·m)
@1550rpm
.
.
403 cu in (6.6 L) D TC I6 M35A3(G742)
M1078(LMTV)
M1083(MTV)
.
C7330 hp (246 kW)
@2400rpm
860 lbf·ft (1,166 N·m)
@1400rpm
439 cu in (7.2 L) D TC I6 2 12-5 ton(FMTV)
C15
[16]
515 hp (384 kW)
@1800rpm
1,650 lbf·ft (2,237 N·m)
@1200rpm
928 cu in (15.2 L) D TC I6 M977(HEMTT)
M1074/M1075(PLS)
C18
[17]
700 hp (522 kW)
@1300rpm
1,900 lbf·ft (2,576 N·m)
@1400
1,106 cu in (18.1 L) D TC I6 M1070A1(HET) [18]

ChevroletGMC

Model Power Torque Displacement Fuel Type Used in
6.2L
[19]
150 hp (112 kW)
@3600rpm
240 lbf·ft (325 N·m)
@2000rpm[20]
379 cu in (6.2 L) D V8 M998(HMMWV)
M1008(CUCV)
6.5L
[19]
160 hp (119 kW)
@3400
290 lbf·ft (393 N·m)
@1700rpm[21]
400 cu in (6.6 L) D V8 M998(HMMWV)
270
[22]
91 hp (68 kW)
@2750rpm
216 lbf·ft (293 N·m)
@1400rpm
270 cu in (4.4 L) G ohv I6 CCKW(G501)
DUKW(G508)
302
[23]
130 hp (97 kW)
@3200rpm
262 lbf·ft (355 N·m)
@1200rpm
302 cu in (4.9 L) G ohv I6 M135(G749)
BV-1001
[24]
83 hp (62 kW)
@3100rpm
184 lbf·ft (249 N·m)
@1000rpm[25]
235 cu in (3.9 L) G ohv I6 1 12ton(G506)

Continental

Model Power Torque Displacement Fuel Type Used in
AO42
[lower-alpha 3]
13 hp (10 kW)
@3000rpm
26 lbf·ft (35 N·m)
@2300rpm
42 cu in (0.7 L) G AC O2 M274
L-142
[26]
65 hp (48 kW)
@4000rpm
128 lbf·ft (174 N·m)
@1800rpm
141.5 cu in (2.3 L) G I4 M151(G838)
LDT465
[27][lower-alpha 3]
130 hp (97 kW) 305 lbf·ft (414 N·m) 478 cu in (7.8 L) M TC I6 M35(G742)
M39(G744)
M656(G852)
R22
[28]
145 hp (108 kW)
@2400rpm
372 lbf·ft (504 N·m)
@1200rpm
501 cu in (8.2 L) G ohv I6 10ton(G116)
R6602
[29]
224 hp (167 kW)
@2800rpm
504 lbf·ft (683 N·m)
@1200rpm
602 cu in (9.9 L) G ohv I6 M39(G744)

Cummins

Model Power Torque Displacement Fuel Type Used in
6CTA8.3 240 hp (179 kW)
@2100rpm
v745 lbf·ft (1,010 N·m)
@1500rpm
504 cu in (8.3 L) D TC I6 M939
NH250
[30]
240 hp (179 kW)
@2100rpm
685 lbf·ft (929 N·m)
@1500rpm
855 cu in (14.0 L) D I6 M809(G908)
M939
V8-300
[31]
300 hp (224 kW)
@3000rpm
580 lbf·ft (786 N·m)
@2100rpm
785 cu in (12.9 L) D V8 M123/125(G792)

Detroit Diesel

Model Power Torque Displacement Fuel Type Used in
3-53 103 hp (77 kW)
@2800rpm
217 lbf·ft (294 N·m)
@1500rpm
159 cu in (2.6 L) D SC I3
(2-stroke)
M561(G874)
Series 60
[32]
400 hp (298 kW)
@2100rpm
1,400 lbf·ft (1,898 N·m)
@1200rpm
775 cu in (12.7 L) D TC I6 M915(LET)
M916(LET)
8V92TA
[33]
450 hp (336 kW)
@2100rpm
1,330 lbf·ft (1,803 N·m)
@1200rpm
736 cu in (12.1 L) D TC V8
(2-stroke)
M911(C-HET)
M977(HEMTT)
M1070(HET)
12V71
[34]
600 hp (447 kW)
@2500rpm
1,470 lbf·ft (1,993 N·m)
@16000rpm
852 cu in (14.0 L) D SC V12
(2-stroke)
M746(G903)

Dodge-Fargo

Model Power Torque Displacement Fuel Type Used in
T-202
[35]
79 hp (59 kW)
@3000rpm
201 cu in (3.3 L) G L-head I6 VC(G505)
T-214-245
[36]
92 hp (69 kW)
@3200
180 lbf·ft (244 N·m)
@1200rpm
230 cu in (3.8 L) G L-head I6 WC(G505)
34ton(G502)
1 12ton(G507)
M37(G741)
318
[37]
150 hp (112 kW)
@4000rpm
230 lbf·ft (312 N·m)
@2400rpm
318 cu in (5.2 L) G ohv V8 M880

Ford

Model Power Torque Displacement Fuel Type Used in
GTB
[38]
90 hp (67 kW)
@3000rpm
180 lbf·ft (244 N·m)
@1200rpm
226 cu in (3.7 L) gas I6 1 12ton(G622)

Hall-Scott

Model Power Torque Displacement Fuel Type Used in
440
[39]
240 hp (179 kW)
@2000rpm
810 lbf·ft (1,098 N·m)
@1200rpm
1,090 cu in (17.9 L) G ohv I6 M26(G160)

Hercules

Model Power Torque Displacement Fuel Type Used in
DFXE
[40]
185 hp (138 kW)
@1600rpm
665 lbf·ft (902 N·m)
@1200rpm
895 cu in (14.7 L) D I6 M20(G159)
HXD
[41]
202 hp (151 kW)
@2150rpm
642 lbf·ft (870 N·m)
@900rpm
855 cu in (14.0 L) G L-head I6 6ton(G547)
JXD
[42]
87 hp (65 kW)
@2400rpm
228 lbf·ft (309 N·m)
@1200rpm
320 cu in (5.2 L) G L-head I6 2 12ton(G630)
RXC
[43]
131 hp (98 kW)
@2200
369 lbf·ft (500 N·m)
@1000rpm
529 cu in (8.7 L) G L-head I6 4ton(G509)
(G510) (G513) (G691)
5ton(G511)

International Harvester

Model Power Torque Displacement Fuel Type Used in
GRD-214
[44]
85 hp (63 kW)
@3400rpm
160 lbf·ft (217 N·m)
@1200
214 cu in (3.5 L) G L-head I6 12ton(M-1-4)
GRD-233
[45]
93 hp (69 kW)
@3400
181 lbf·ft (245 N·m)
@800-1200
233 cu in (3.8 L) G L-head I6 12ton(M-1-4)
1ton(M-2-4)
1 12ton(M-3-6)
RED-361-B
[46]
111 hp (83 kW)
@2650rpm
282 lbf·ft (382 N·m)
@1200
361 cu in (5.9 L) G L-head I6 2 12ton(G651)
RED-450-D
[47]
124 hp (92 kW)
@2600rpm
348 lbf·ft (472 N·m)
@800rpm
451 cu in (7.4 L) G ohv I6 M425/26(G671)

LeRoi

Model Power Torque Displacement Fuel Type Used in
T-H844
[48]
297 hp (221 kW)
@2600rpm
725 lbf·ft (983 N·m)
@1700rpm
844 cu in (13.8 L) G ohv V8 M123/25(G792)

Mack

Model Power Torque Displacement Fuel Type Used in
EN532
[49]
136 hp (101 kW)
@2400rpm
532 cu in (8.7 L) G L-head I6 5ton(G639)
EY
[50]
159 hp (119 kW)
@2100rpm
530 lbf·ft (719 N·m)
@800rpm
707 cu in (11.6 L) G ohv I6 6ton(G535)
7 12ton(G532)
ENDT673
[29]
211 hp (157 kW)
@2100rpm
610 lbf·ft (827 N·m) 672 cu in (11.0 L) D TC I6 M39(G744)

REO

Model Power Torque Displacement Fuel Type Used in
OA-331
[51][lower-alpha 1]
146 hp (109 kW)
@3400rpm
330 lbf·ft (447 N·m) 331 cu in (5.4 L) G ohv I6 M35(G742)

Notes

  1. 1 2 Also built by Continental
  2. Ford and Willys parts were interchangeable, Ford parts often had a letter "F" on them.
  3. 1 2 Also built by Hercules.

References

  1. Crismon, Fred W. (1998). Modern U.S. Military Vehicles. MBI Publishing. p. 9. ISBN 0-7603-0526-9.
  2. Crismon (2001), p. 9.
  3. TM 9-2800 (1947).
  4. Data Sheets (1959). "Standard Military Vehicle". Ordnance Tank Automotive Cmd. Retrieved 30 Oct 2015.
  5. TM 43-0001-31 (1985). "Equipment Data Sheets for TACOM Combat and Tactical Equipment". US Dept. of the Army.
  6. Doyle, David (2003). Standard catalog of U.S. Military Vehicles. Kraus Publications. ISBN 0-87349-508-X.
  7. Ware, Pat (2010). The World Encyclopedia of Military Vehicles. Lorenz Books. ISBN 0-7548-2052-1.
  8. Doyle (2003), pp. 54.
  9. "TM 9-2320-225-20 Organizational Maint. Manual for Truck, Utility: 14-ton, 4x4, Lightweight, M422 and 422A1". US Dept of the Army. Jan 1960. p. 48. Retrieved 23 Jan 2016.
  10. "TM 9-803 14-ton 4x4 truck (Willys-Overland Model MB and Ford Model GPW)". US War Dept. 22 Feb 1944. p. 104. Retrieved 11 Jan 2016.
  11. "TM 9-804A 14-ton 4x4 Utility Truck M38A1". US Dept. of the Army. Jul 1952. p. 99.
  12. "TM 2320-244-10 Operator's Manual Truck, Cargo, 1 14 ton, 4x4 M715…(and others)". US Dept. of the Army. Aug 1971. p. para. 1-8. Retrieved 17 Jan 2016.
  13. "TM 9-2320-386-24-1-1 Tech. Manual…(ESC) Unit, D.S. and G.S. Maint. Manual for 2 12-ton, 6x6, M44A3 series trucks (Diesel)". US Dept. of The Army. 1 May 2001. p. 0003 00-7. Retrieved 18 Jan 2016.
  14. "TM 9-2320-365-10 Operator's Manual M1078 series…(LMTV)". US Dept. of the Army. Jun 1998. pp. 1–24, 1–25. Retrieved 4 Jan 2016.
  15. "TM 9-2320-366-10 Operator's Manual M1083...(MTV)". US Dept. of the Army. Sep 1998. p. 1-42. Retrieved 4 Jan 2016.
  16. "TM 9-2320-338-10 Operator's Manual for Truck, Cargo, 8x8, M977A4". US Dept. of The Army. 15 Oct 2008. pp. 0006–3, 0006–4.
  17. "TM 9-2320-427-10 Operator's Manual for Truck, Tractor, 8x8, M1070A1". US Dept. of The Army. Jan 2011. p. 0006-3. Retrieved 6 Jan 2016.
  18. "Oshkosh Defense HET". Oshkosh Defense. Retrieved 2015-08-24.
  19. 1 2 "TM 9 2320-280-10 Operator's manual for Truck, Utility, Cargo/Troop Carrier, 1 14-ton, 4x4, M998…(and others)". US Dept. of the Army. Jan 1996. p. 1-25. Retrieved 8 Jan 2016.
  20. Doyle (2003), p. 82.
  21. Doyle (2003), p. 87.
  22. TM 9-2800 (27 Oct 1947). "Military Vehicles". US Dept. of the Army. p. 273. Retrieved 23 Jan 2016.
  23. Doyle (2003), p. 160.
  24. "TM 9-805 1 12 ton 4x4 Truck (Chevrolet)". US War Dept. 30 Dec 1943. Retrieved 8 Jan 2016.
  25. Doyle (2003), pp. 98.
  26. "TM 9-2320-218-20 Organizational Maint. Manual Truck, Utility, 14 ton, 4x4 M151…(and others)". US Department of the Army. Sep 1971. p. 4. Retrieved 10 Jan 2016.
  27. "TM 9-2320-361-20 Unit Maintenance for 2 12-ton, 6x6, M44A2 series Trucks". US Dept. of the Army. October 1991. p. 134. Retrieved 13 Jan 2016.
  28. "TM 9-796 Heavy Wrecker Truck, M1A1". US War Dept. 1 Mar 1944. p. 147. Retrieved 14 Jan 2016.
  29. 1 2 Doyle (2003), p. 188.
  30. "TM 9-2320-260-20 Technical Manual Unit Maintenance 5-ton, 6x6, M809 series Trucks (Diesel)". US Dept. of the Army. Apr 1995. p. 3-1. Retrieved 21 Jan 2016.
  31. "TM 9-2815-213-34 DS and GS Maint. Manual for Engine, Diesel, with accessories Cummins model V8-300". US Dept. of the Army. 26 Nov 1976. p. 1-6. Retrieved 22 Jan 2016.
  32. "TM 9-2320-363-10 Operator' Manual for Truck, Tractor, Line Haul, 52,000 GVWR, 6x4, M915A2…(and others)". US Dept of the Army. Dec 1997. p. 1-18. Retrieved 17 Jan 2016.
  33. "TM 9-2320-434-10 Operators Manual for Truck,…(LHS), 8x8 M1120". US Dept. of the Army. 15 Jun 2009. p. 0006-4.
  34. Doyle (2003), p. 243.
  35. Doyle (2003), p. 44.
  36. TM 9-2800 (1947), p. 234.
  37. "TM 9-2320-266-34 Dir. and Gen. Spt. Maint. Manual Truck, Cargo, 1 14 ton, 4x4 M880…(and others)". US Department of the Army. Jan 1976. pp. 1–3, 1–4. Retrieved 9 Jan 2016.
  38. TM 9-2800 (1947), p. 251.
  39. TM 9-2800 (1947), p. 152.
  40. TM 9-2800 (1947), p. 150.
  41. "TM 9-813 6 ton 6x6 Truck (White, Corbit, and Brockway)". US War Dept. 19 Feb 1944. p. 124-125. Retrieved 30 Aug 2015.
  42. TM 9-2800 (1947), p. 266.
  43. "TM 9-811 4-ton, 6x6 Trucks (Diamond T Models…)". US War Dept. 25 Jan 1944. p. 134. Retrieved 10 Jan 2016.
  44. Doyle (2003), p. 51.
  45. Doyle (2003), p. 71.
  46. Doyle (2003), p. 127.
  47. "TM 9-1812 Ordnance Maint. 5-ton 4x2 Tractor Truck (C.O.E.) IHC Models H-542-9…(and others)". US War Dept. 26 May 1944. p. 11. Retrieved 10 Jan 2016.
  48. Doyle (2003), pp. 229.
  49. Doyle (2003), p. 174.
  50. Doyle (2003), p. 207.
  51. Doyle (2003), p. 155.
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