[edit] 350
Buick adopted the popular 350 cu in (5.7 L) size with their final family of V8s. Although sharing the displacement of the Chevrolet Small-Block engine family, the Buicks were substantially different.
The Buick 350 V8 had a 3.80 in bore (like the 231) and retained the 3.85 in stroke of the 340. It was introduced in 1968 and produced through 1980. Its nickname is "Dauntless."
The major differences of the Buick 350 when compared to other GM V8's are deep skirt block construction, higher nickel-content cast iron, external oil pump, under square bore sizing, 3.0" crank main journals, and 6.5" connecting rods. It is an extremely rugged and durable engine, and some of the design characteristics of the Buick 350 are found in modern GM engines such as the 231 V6, and Series I, II, and III 3800 V6's.
Of all the GM 350-cubic-inch (5.7 L) engines, the Buick 350 has the longest stroke, which lends to making significantly more torque than any of the others. It also made the Buick 350 significantly wider - essentially the same width as the Buick big-blocks, which have the shortest stroke of the GM big-blocks. In fact, at a glance the Buick 350 is commonly mistaken for the 455 engine due to the oversized intake manifold atop the engine. The Buick 350 also shares an integrated aluminum timing cover as do most of the Buick small & big blocks which incorporates the oil pump mechanisms as well, leaving the oil filter exposed to oncoming air for added cooling.
The Buick 350 was used in the Jeep Gladiator and Wagoneer from 1968 to 1971.
