![]() It was used in the Chevrolet SSR, GMC Envoy and other light-duty models. The LM4 is another aluminium-block variant of the LM7, making 290hp (216kW) and is not as high-performance as the 元3. The #799 cylinder heads are reportedly the same casting as the LS6 and LS2 #243 heads, minus hollow exhaust valves and high-performance valve springs. It is an aluminium-block variant of the iron LM7 with flat-top pistons from the 4.8L LR4, a higher-lift cam, higher compression ratio and LS6 cylinder heads, making 310hp (235kW). The 元3 is also known as the Vortec 5300 HO. ![]() The stroke is 9mm over the Vortec 4800 and from that point on there are lots of differences. The Vortec 5300 engine had several variants over its life, being known as the LM4, LM7, 元3 and L59. It’s found in 1999-2006 Chevy Tahoe/GMC Yukon, Silverado/Sierra and Express/Savana models. MORE LS engine variants part one - Generation III GEN IIIĪlso known as the Vortec 4800, it is an iron truck motor designed to replace the 305-cube 5000 元0.
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