Just came across this today. It's a pretty nice comprehensive list, complete with contracted amounts and the number actually built. Thought some of you would like it.
http://www.alternatewars.com/BBOW/Stats/WW2_US_Cancellations.htmHere's an snippet of the extensive list:
Ground Vehicles Canceled
M29C Weasel Tracked Carriers – 10,692 canceled on V-J Day, along with the Ford-Studebaker Factory to be used for production. [23]
LVT(3) Amphibian Tractor. 412 canceled in August 1945. [26]
LVT(4) Amphibian Tractor. 1,838 canceled in August 1945. [26]
LVT(A)(5) Amphibian Tank. 250 canceled in August 1945. [26]
T29 Heavy Tank (105mm HV gun) – Between 1,000 and 1,200 canceled August 1945. Production would have started Jan 1946 at Detroit Tank Arsenal.
Heavy Weight Combat Team (M26 Pershing Hull)
M26 (T26E3) “Pershing”. (? TBD)
T26E4 “Super Pershing”. 975 canceled in March 1945. 25 built.
T26E5 “Jumbo Pershing”. Program canceled. 27 built.
M45 (T26E2). 185 built total, canceled (?)
T84 HMC (8-inch Hwtzr). Program canceled at end of war. 2 built.
T92 HMC (240mm Hwtzr). 120 ordered, 5 completed and being prepared for shipment to the PTO with concrete piercing shells when war ended, causing cancellation of the remaining 115 vehicles. [28]
T93 GMC (8-inch gun). Program canceled. 2 built and being prepped for shipment to PTO with concrete piercing shells when war ended.
Medium Weight Combat Team (M4 Sherman Hull)
M40 (T83) GMC (155mm gun) 600 ordered. 289 canceled. 311 built.
M43 (T89) HMC (8-inch Hwtzr) Standardized in August 1945. Only 48 built.
T94 MMC (250mm mortar) Program Canceled. 1 built. Pacific Army units wanted two each in regimental cannon companies.
Light Weight Combat Team (M24 Chaffee Hull)
M19 (T65E1) SPAA (40mm Bofors) 904 ordered August 1944. 619 canceled at war’s end. 285 built.
M37 (T76) HMC (105mm Hwtzr) 448 ordered. 132 canceled. 316 built.
M41 (T65E1) HMC (155mm Hwtzr) 250 ordered. 190 canceled. 60 built.
T6E1 (Recovery Vehicle) Program Canceled. 1 built.
T38 MMC (4.2” Mortar) Program Canceled. 1 built.
T77/T77E1 SPAA (4 x .50 cal) Program Canceled. 1 built.
T96 MMC (155mm Mortar) Program Canceled. 1 built.
Small Arms Canceled
Rifle, Caliber .30 T20E2 – 100,000 canceled around V-J Day. Fully automatic Garand.
57mm Recoilless Rifle M18/T15E9 – 1,359 limited production items canceled, 650 made [24] [25]
75mm Recoilless Rifle M20/T25 – 742 limited production items canceled. 1,258 made. [24][25]
105mm Recoilless Rifle M27/T19 – 540~ canceled. [24][25]
3.5” Rocket Launcher M20/T74 – 5,000 limited production items canceled [24]
4.2” Recoilless Chemical Mortar – 883 limited production items canceled. 117 built.
Missiles / Flying Bombs Canceled
Willys-Overland JB-2 “Loon” – 10,600~ canceled after V-J Day. 1,400~ built. Clone of V-1 Buzz Bomb. [11]
RCA/National Bureau of Standards “Bat” – 7,000~ canceled after V-J Day. 3,000~ built. Guided anti-ship missile. [12]
U.S.A.A.F Fighters Cancelled
Lockheed P-38L-5-VN “Lightning” – 1,887 canceled after V-J Day. Convair built. 113 planes completed by August 1945.
Lockheed P-38L-5-LO “Lightning” – 1,380~ canceled after V-J Day.
Republic P-47N “Thunderbolt” – 5,934 canceled after V-J Day. [9]
North American P-51D “Mustang” – 1,000 canceled after V-J Day.
North American P-51H “Mustang” – 1,445 canceled after V-J Day. 555 completed by V-J Day with last aircraft delivered in 1946. [9]
North American P-51M “Mustang” – 1,628 canceled after V-J Day. Single plane built. [9]
North American P-51L “Mustang” – 1,700 canceled after V-J Day. Never Built. [9]
Cheers,
Logan