This is the Southern Jet marine manifolds for the popular LS engines. These high flow manifolds have been designed to gain optimum performance with long equal length primary runners. These are a one piece water jacketed manifold that feature individual runners for each port and they are water fed from the lowest point in four locations rather than from the end and one location.

These fit directly to the LS1,LS2,LS3,LSA and are also available for the LS7 upon request