Holley EFI Lo-Ram Plenum | 300-605

The P/N 300-605 & 300-605BK Lo-Ram plenum tops are designed as part of the Holley LS front-feed Lo-Ram EFI intake manifold kits. The front feed Lo-Ram kits are intended for boosted engine applications where the requirement of a intake manifold plenum burst panel may be recommended to protect the engine from intake plenum back-fire. The 300-605 plenum top is machined for a standard 'large' 6-1/8 in. x 3-1/8 in. burst panel. SFI approved burst panels, burst panel frame sets, and gaskets may be purchased from various manufacturers such as Allstar Performance or Specialty Fasteners.