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).
The technical specifications, performance, and vibration issues of various Cadillac engines.
| Identifier | ExFiles\Box 153\4\ scan0140 | |
| Date | 10th December 1942 guessed | |
| (3) Cadillac have tried V.12 (at 60°) V-16 (at 45° OHV; or 135° s/s valves) yet Cadillac, with their old. trusty. & proved V.8 built America's N°1 automobile (judging by sales, trade opinion & resale values) Strangely enough - the Cadillac in question uses a 3 1/2" bore & 4 1/2" stroke which gives it 5 2/3 L. As you must be well aware - the Caddy or the Mercury employ the 90° crankshaft layout - which involves the use of 2 heavy balance weights to restore primary balance, & four considerable B/W.s to deal with unbalanced 2ndaries. Cadillac vibration up to nearly 4000 revs (90 mph on 3.77 top) just can't be felt. - even on the over-run - or when abused at 5 mph on top. Yet our American friend considers the firing order of these 90° V.8's (with their cranks at 90°) "cock-eyed". (8) | ||