LS3 versus LS7 Engine Longevity
Le Mans Master
Joined: Feb 2002
Posts: 5,394
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From: cumming ga
liners
No, I didn't mean to say that at all. I meant to say what I said. The LS1, LS6, LS2, and LS3 all use pressed in cast iron cylinder liners. All of these can be removed and replaced when they wear out. The LS7 has so little room between bores that the factory actually casts the liners in place rather than machining the raw blocks and pressing in separate liners the way they do for the other engines. Thus the LS7 block is a throwaway when it wears. Chevy has only ever made one other engine with a throwaway block, the infamous Chevy Vega engine.
z51vett
