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GM Performance Parts is famous for enhancing the General's designs, then selling the hot-rodded goodies to eager enthusiasts. In the LS376/480's case, GMPP starts with the 6.2-liter, 430-horse LS3; 376 cubes with a 4.06 bore and 3.62 stroke. The bottom end-featuring a nodular iron crank, powdered metal rods, and hypereutectic aluminum pistons-is anchored by the 6-bolt mains we know and love. Rectangle-port, 68cc LS3 heads with 2.16 intake/1.59 exhaust valves mean a 10.7:1 compression ratio, and provide massive airflow capability-so GMPP adds an LS Hot Cam (PN 88958733) featuring 219/228 duration and .525-inch lift, with a 112 LSA. That brings the horsepower total to 480, and ups the max rpm to 6,600! The LS376/480 carries a part number of 19171224. Retail is $8,928, but you can grab it for only $6,650 at Scoggin-Dickey (www.sdparts.com). View Related Article
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