Holley Aluminum LS1 intake manifold.

Based off the LS6 manifold, Holley's new aluminum manifold makes more power on the LS1 by increasing air flow and giving the engine builder the ability to port match to the cylinder heads increasing the flow through the entire engine, not just through the manifold. Lingenfelter & Holley designed this manifold with a removable bottom plate to give access to internal passages. This design feature makes porting and installing a direct port nitrous system a breeze. The aluminum manifold is a street rod builders dream with the ability to be polished to a show finish. This Holley manifold is perfect for blown, stroker and nitrous applications or for anyone looking to increase the power output of their LS1.