Gen III is the first family of GM’s LS V8, the one the Holden LS1 belongs to. We keep 10 parts filed under Gen III as a whole. They are catalogued for the LS design in general rather than for one engine code. The ARP head bolt kit suits 2004 on engines, where every head bolt is the same length. The Athena head gaskets are cut at 3.996 and 4.150 inch bore and .059 inch thick. The same parts sit on our Gen IV LS page. For parts listed against a single engine, start from the LS1 page.
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