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					Originally Posted by  ar0ck
					 
				 
				The way I saw it, was yeah it meant LS-1,6, Etc, but these days all the motors are a combination from all the series, so X in my mind was "its built with varying parts" 
			
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 Agreed. IMO, LSx means that it's LS-based. It could be ~anything~ in that family that's been modified.