![]() The engine was available with low-riser, mid-riser, or high-riser intake manifolds, and either a single four-barrel carburetor or a double four-barrel setup on an aluminum manifold for highest performance. Today, the premium aftermarket aluminum replacement block uses a top-oiler system. In street use the two blocks are equivalent. The side oiler block, introduced in 1965, sent oil to the crank first and the cams second. ![]() The FE engine was Ford's main race engine in the mid-1960s and as such was under constant engineering scrutiny and subject to frequent design updates based on extreme racing experiences. This was remedied by Ford later by including a factory windage tray under the main bearings. When under extremely hard acceleration oil in the pan would tend to slosh back. It gained something of an undeserved reputation for insufficient crankshaft lubrication under heavy abuse. The top oiler version was the earlier, and delivered oil to the cams first and the crank second. Two different models of 427 block were produced, the 427 top oiler and 427 side oiler. Forged pistons were employed (the only production Ford big-block with such) and forged rods inherited from the 390 Hi-Po. The cylinders were cast using cloverleaf molds-the corners were thicker all down the wall of each cylinder. The block was made of high nickel content iron and was made with an especially thickened deck to withstand higher compression. The stroke was the same as the 390 at 3.78 in (96mm) but the bore was increased to 4.23 in (107.4mm). ![]() The true displacement of the 427 was actually 425 in3 (6,965 cm3), but Ford called it the 427 because 427 in3 (7.0 L) was the NASCAR maximum size. It was developed for NASCAR stock car racing, drag racing, and serious street racers. Here is more information regarding the 427 engine.įord's 427 in3 (7.0 L) V8, introduced in 1963, was a racing engine pure and simple.
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