General Motors LS-based small-block engine: Difference between revisions

Revision as of 17:34, 2 November 2004

Revision as of 23:54, 6 November 2004

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=Generation III=

The '''Generation III''' small-blocks replaced the LT family in 1998[[1997]]. These shared the same rough displacement and bore spacing (4.4 in) as their cast iron predecessors but muchalmost everything else was changed. The bore was reduced to 3.9 in and the stroke longer at 3.62 in for greater torque. The block was cast from aluminum (for cars) instead of iron and had a new intake and injection technology and [[coil-on-plug]] ignition. The traditional five-bolt pentagonal cylinder head pattern was replaced with a square four-bolt design, and the pistons are flat instead of domed. Even the cylinder firing order was changed.

==LS1==