Cadillac 390 series V8 engine

The Cadillac 390 series was the redesign of the company overhead valve V8 for the 1963 model year. It kept the same layout and architecture as the 1949 engine but modernised the tooling used on the production line, with shorter connecting rods and an overall package 1 inch lower, 4 inches narrower and 1.25 inches shorter. The accessories, including the water pump, power steering pump and distributor, moved to a die cast aluminium housing at the front of the engine, an alternator replaced the generator and the crankshaft was cored out. The result weighed 52 pounds less, with a dry weight of 595 pounds. The first version kept a 4 by 3.875 inch bore and stroke, 390 cubic inches and 325 horsepower. For 1964 a 4.13 by 4 inch bore and stroke raised displacement to 429 cubic inches and power to 340 horsepower, with the first positive crankcase ventilation unit, and it ran through 1967.