{"product_id":"holley-mid-rise-plenum-base-adapter-kit-gm-ls1-ls2-ls6-300-267","title":"Holley Mid-Rise Plenum Base Adapter Kit - GM LS1\/LS2\/LS6 - 300-267","description":"For use with LS Dual Plane Mid-Rise intake manifold base to adapt to modular tops.\n\nThe Modular Mid-Rise intake utilizes the popular Holley LS1\/LS2\/LS6 cathedral port Mid-Rise 2 x 4 intake manifold along with a purpose built plenum base adapter and a Holley 92MM EFI plenum top which converts it into a Mid-Rise EFI intake manifold. With a max overall height of only 10.44\", the Mid-Rise manifold is an excellent choice for street and performance street\/strip applications with a powerband from 1,500-6,500 RPM and limited hood clearance.  It's perfect for a blow-thru or turbocharged application.\n\nBeing part of the Holley modular intake line means that this intake is not only available as a complete kit with intake, adapter, 92MM top and fuel rails, but all parts can also be purchased separately for a custom intake build. The plenum adapter (PN 300-267) will accept all of the popular Holley Hi-Ram plenum tops as a foundation for custom induction systems.\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProvides great performance to 6500 rpm for street\/strip performance applications while providing the look of a racing EFI intake manifold\u003c\/li\u003e\n\u003cli\u003eUnique modular design allows the combination of a traditional dual-plane layout with an EFI manifold plenum to produce great mid-range torque without compromising top end power\u003c\/li\u003e\n\u003cli\u003eGreat for supercharged or turbocharged engines\u003c\/li\u003e\n\u003cli\u003ePower band from 1500-6500 rpm\u003c\/li\u003e\n\u003cli\u003eMay require an aftermarket hood for some vehicle applications.\u003c\/li\u003e\n\u003cli\u003eCast aluminum construction\u003c\/li\u003e\n\u003cli\u003eIntended for use on all GM LS Gen III or IV engines equipped with LS1\/LS2\/LS6 style cathedral port cylinder heads (recalibration of the ECU may be required when using this intake manifold design with OE ECU).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e The Modular Mid-Rise intake utilizes the popular Holley LS1\/LS2\/LS6 cathedral port Mid-Rise 2 x 4 intake manifold along with a  plenum base adapter and a Holley 92MM EFI plenum top which converts it into a Mid-Rise EFI intake manifold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManifold Color:\u003c\/strong\u003e Cast\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManifold Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManifold Mount Hole Quantity:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Engine Intake Manifold Conversion Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Intake Manifold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType of Component:\u003c\/strong\u003e Manifold Top\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cp\u003eHolley EFI LS main harnesses have a map sensor connecter designed for use with an LS1\/2 style map sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses a LS1\/2 MAP sensor connection to a LS3 MAP, which is recommended for this manifold.\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":49710269726958,"sku":"HLY-300-267","price":311.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/elmosspeedshop.com\/products\/holley-mid-rise-plenum-base-adapter-kit-gm-ls1-ls2-ls6-300-267","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}