LS Intake Manifold
If you are shopping for an intake manifold for your LS or Vortec engines, you have to match the manifold to the cylinder head port style. LS1 LS6 LS2 as well as Vortec engines up to about 2007 use what is known as the cathedral port style. LS3 L92 L99 LY6 all use the rectangular port configuration. LS7 is a raised rectangular port configuration different than the other rectangular port.