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In an internal combustion engine, the engine block is the structure that contains the cylinders and other components. The engine block in an early automotive engine consisted of just the cylinder block, to which a separate crankcase was attached. Modern engine blocks typically have the crankcase integrated with the cylinder block as a single ...
Blocks made of both iron and aluminum alloys, for many different purposes – e.g. street-use, racing, etc. – are available in stock or modified configurations, as well as with increased deck height to allow for a longer stroke or more favorable rod length ratios, depending on intent, providing the ability to make engines with capacities of ...
An ideal block and tackle with a moving block supported by n rope sections has the mechanical advantage (MA), = =, where F A is the hauling (or input) force and F B is the load. Consider the set of pulleys that form the moving block and the parts of the rope that support this block.
Block coefficient (C b) is the volume (V) divided by the L WL × B WL × T WL. If you draw a box around the submerged part of the ship, it is the ratio of the box volume occupied by the ship. It gives a sense of how much of the block defined by the L WL, beam (B) & draft (T) is filled by the hull.
Ford took the 400 engine's tall-deck block and installed a crankshaft with a shorter 3.5 in (89 mm) stroke to produce a 351 cubic inches (5.8 L) engine. This crankshaft was not the same as a 351C, in that it used the larger 3.0 in (76 mm) main bearing journals of the 400 V8. [ 5 ]
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Post-1971 blocks possibly had a lower nickel content but thicker cylinder deck, and post 1974 heads of the small-block Chevrolet used less iron, and were lighter weight, crack-prone, and were less powerful because of the lower compression ratios used. [citation needed]
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