LS4 LS based GM small-block engine

5.3 l ls4 v8 in 2006 chevrolet impala ss



ls4 can refer 454 cid chevrolet big-block engine of 1970s

the ls4 5,328 cc (5.328 l; 325.1 cu in) version of generation iv block. though has same displacement vortec 5300 ly5, features aluminum block instead of iron, , uses same cylinder head generation iii ls6 engine. bellhousing bolt pattern differs rear-wheel drive blocks.

this engine adapted transverse front-wheel drive applications. according gm, crankshaft shortened 13 mm – 3 mm @ flywheel end , 10 mm @ accessory drive end – reduce length of engine compared 6.0l. accessories driven single serpentine belt save space. water pump mounted remotely elongated pump manifold connects coolant passages. revised oil pan baffles, or windage trays, incorporated ls4 ensure oil sump stays loaded during high-g cornering. active fuel management used. output of version 303 hp (226 kw)/300 hp on lacrosse super , 323 lb·ft (438 n·m).

applications:

2005–2008 pontiac grand prix gxp
2006–2009 chevrolet impala ss
2006–2007 chevrolet monte carlo ss
2008–2009 buick lacrosse super




^ ls4 overview - gm powertrain .