long block

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English[edit]

Etymology[edit]

From the larger size of the engine block assembly compared to a short block.

Noun[edit]

long block (plural long blocks)

  1. (automotive) An engine subassembly that consists of the assembled short block, plus the crankshaft, cylinder head, camshaft (usually), and valve train.

Usage notes[edit]

Not the same as big block, which refers to the physical size of an engine rather than the completeness of the subassembly.