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Long Block Versus Short Engine Block - Engine rebuild in-part or whole?

When you are considering engine repair, replacement  and/or performance upgrades or other tinkering, knowing the basics about engine assemblies,  repair kits, options, parts and choices ,  rebuilt,  remanufactured engine block assemblies,  available to you is crucial to your success, informed decision making and appropriate engine, year, make and model and answering unique needs,  requirements and specifications.

Knowing the characteristics of your engine in question, is key to assist your selection and eventual purchase process. Short engine blocks are typically automotive terminology used as a general, encompassing term,  when referring to ‘smaller’ engines and or parts of engine assemblies. Engine short block assemblies, short block engine combinations and configurations is not an all-inclusive engine assembly, but a partial and/or sub-set or assembly. For all high quality used, new, remanufactured, aftermarket long and short engine block products, assemblies, parts and automotive accessories, we have all available through global sourcing channels.
 
Short engine blocks can be defined then, for our purposes, as engine sub-assemblies consisting of cylinder blocks, crankshaft, cylinder liners, rods, pistons,  and camshaft, timing gears and valves (if applicable). Long block engine assemblies on the other hands, include an all-comprehensive,  ‘super-set’ of the corresponding short block configuration. Cylinder head,  new gasket head, valves, springs, guides, seats, locks and keepers,  camshafts and timing gears, bearings etc.
 
Various engine types could include inline engine designs, straight engine, with all of the pistons placed in a single row. V engine, with two banks of cylinders sharing a single crank case. Flat engine, essentially a V-block with the cylinder banks at 180 degrees from each other, as opposed to 60 or so for the V. H engine, two crankshafts. W engine. Square engine. Opposed piston engine, with multiple crankshafts, an example being: Delta engines, with three banks of cylinders and three crankshafts U engine, two separate straight engines with crankshafts linked by a central gear. X engine. Radial designs, including most: Rotary engine designs. Piston-less rotary engines, notably the so-called Wankel engine.
 
The short-block is normally seen as the assembly that will be rebuilt when an engine is overhauled. The short block typically refers to the parts of the cylinder block itself, which is not part of any other system and which all other components and parts of the engine connect to.
The short block engine is normally just the block with pistons and a crank, and no heads or intake. Short block refers to the engine in its most basic form – five engine plates, the front cover, front pulley hub/boss ONLY. It does not include the oil pan, flywheel, water pump etc. Also called the engine CORE. Factors to consider for short block engines and work,  include stroke, rod length, piston compression height and block deck height as well.
 
The long block is as close to full engine assembly, ready to run, so to speak, you can come. It is the complete engine as it would be pulled from its functional space. Manifold, accessories and wiring intact.  Long block engines will include more parts, and thus, cost more,  short block on the other hand will have less parts, costing less, requiring more labor to assemble and install properly and will use some old engine parts.

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