the ability to port the interior passages (thanks to a removable plenum cover), and an attractive ... to be a serious new contender in the LS-intake-manifold market. As is evident from the graph ...

As applied to the intake manifold, the main factors that ... cam sensors, and valley covers! Look for the RHS LS Race Block to debut under part numbers 54900 (9.750 deck, 4.165 bore), 54901 ...