Thread: I need some help...what's the diference between a big block and short block?

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a big block and a short block, are not one in the same, they are two seperate things. a big block is simply a big block engine with large bores like 427 454 502, a short block is an engine block that has the internals installed, such as crank, rods, pistons, cam shaft. a short block can come in big and small block set ups, and also a 350 that you want to build is a small block. and now comes the term long block, it is a short block with the cylinder heads installed. hope this helps in you new hobby that will have you enjoying and hating your garage in ways youve never imagined.