Rhs Head Swap Pistons
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As we mentioned, the LQ9 gets its compression boost over the more common LQ4 from a set of flat-top pistons. Given the lack of piston reliefs, and the fact that the slugs protrude 0.009-inch above the deck (thanks again, LS1Tech.com), a new cam must be chosen with care. Also, be sure to blow any water out of the block boltholes when swapping heads, or you’ll have problems with the new head bolts. View Related Article
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