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 ...

See All 19 Photos 11.The valve covers are installed next ... with airflow specialists at RHS to develop polymer intake manifolds for GM LS engines. While the LSXR features a 102mm air inlet ...

The bore of Chevy's new LS1 aluminum block can't be increased ... Not much could be done to Chevy's composite intake manifold, but it was ported slightly nonetheless and matched to the cylinder ...