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 listing the weights in pounds for various parts of the 1937 Buick across different series models.
| Identifier | ExFiles\Box 96\4\ scan0133 | |
| Date | 24th March 1937 | |
| 358 C.S.P.Y. 1937 BUICK WEIGHTS. March 24th, 1937. PART. WEIGHT IN POUNDS. Series "40" Series "60" Series "80" Series "90" Engine - (Less clutch and oil, includes manifold.) 735 836 836 836 Exhaust Manifold 17½ 18½ 18½ 18½ Transmission Assembly (includes rear bearing retainer, universal joint, universal joint ball and retainer, and shift lever) 76½ 91 91 91 Rear Springs (Less covers) - each 38 38 45½ 56½ Rear Spring Rate (Test machine lbs per inch deflection) 128 122 135 146 Rear Axle Assembly (Less brake drums, includes brakes) 220 226½ 240 274½ Where both systems use the same type of emergency brake hook-up, the hydraulic brake hook-up saves same weight over the mechanical brake hook-up. It saves considerable weight over the vacuum booster system. Clutch Wt. Olds. 16.50 lbs. | ||