From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Table detailing the specifications of various car engines.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page275 | |
| Date | 9th May 1935 | |
| x100 9.5.35. PARTICULARS OF CAR ENGINES. TYPE BORE STROKE STROKE/BORE TOTAL CYLINDER CAPACITY R.A.C. RATING WHEEL BASE TRACK Phantom II 4.250" 5.500" 1.29 468 cu.in 7668 c.c. 43.3 12'6" 5'0" 20/25 HP. 3.250" 4.500" 1.38 224 cu.in 3670 c.c. 25.3 11'0" 4'8" Japan I 3.250" 4.500" 1.38 224 cu.in 3670 c.c. 25.3 11'0" 4'8" Japan III 3.400" 5.000" 1.47 272 cu.in 4464 c.c. 27.7 11'0" 4'10" Peregrine 2.725" 4.125"(2) 4.000 (4) 1.51 144 cu.in 2364 c.c. 17.7 10'0" 4'8" Vulture 4.375" 5.500" 1.26 496 cu.in 8131 c.c. 45.9 11'0" 4'10" SpectreCodename for Phantom III 3.250" 4.500" 1.38 448 cu.in 7340 c.c. 50.7 12'6" 5'0" Wraith 3.000" 4.500" 1.50 254 cu.in 4171 c.c. 28.8 11'0" 4'8" Bentley Large Bore 3.500" 4.500" 1.28 260 cu.in 4260 c.c. 29.4 22.0 12-Cylinder Packard 3.437" 4.250" 1.238 473 cu.in 56.4 | ||