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The Brodix PM-1900 Series Large Plenum - Spread Port intake manifolds are offered with oval port openings and fit all the PB Series Spread Port oval port heads (Must be port matched for rectangular port heads). These manifolds have larger plenums than the PM-1800 series and are for Large CID or high rpm engines. They are available for 9.800 standard deck and 10.200 tall deck blocks. The rpm range is 5500 - 8500 rpm and use a 4500 series top. For smaller CID or lower rpm engines use the PM-1800 series manifolds. |
