GM Performance 19435098 6.2L LS3 Crate Engine - 430HPCrate Engine 6. 2L LS3 430HP Crate Engine LS3 430 HP GM LS Series A Contemporary Classic Destined to go down in history as one of Chevrolets most versatile performance engines, the 430 hp LS3 6. 2L offers a fantastic combination of modern technology. The LS3 is filled with components designed for high performance and longevity, starting with a sturdy reciprocating assembly thats matched with L92 type rectangular port heads and a high lift, hydraulic