The LSX is GM’s aftermarket block for LS builds. We keep 7 parts for it. Most of them are Athena head gaskets for 7.0 litre LSX engines, cut at 4.150, 4.174 or 4.200 inch bore and .051 or .059 inch thick. Nearly all are sold for one bank, so match the bore and the side to your block. ARP covers the fasteners: an ARP2000 head stud kit for the six bolt head pattern, and a main stud kit catalogued for the LS1 that is also listed for this block.

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