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).
Blueprint comparing the lengths of 6-cylinder and 8-cylinder high power head engines.
| Identifier | ExFiles\Box 134\2\ scan0050 | |
| Date | 7th August 1935 | |
| I E E I I E E I CAMSHAFT BEARINGS LENGTH OF 6 CYL. x 3.5 BORE = 27.5 LENGTH OF 8 CYL. x 3.125 BORE = 32.0 LENGTH OF HIGH POWER HEAD ENGINE. ROLLS-ROYCE, LTD PRINT ROOM AUG 7 1935 DERBY Hs.{Lord Ernest Hives - Chair}2068 | ||