Both the LS3 and LSA are two of the baddest engines Chevy has to offer and the ... integrated piston-cooling oil jets, and high-flow cylinder heads topped off with a 1.9L sixth-generation ...

The small block Chevrolet ... LS3's breathability. Improved intake manifold, cylinder head, and exhaust manifold designs combine to enhance the flow of air, fuel, and exhaust gasses through the ...