{"product_id":"holley®-300-123bk-gm-ls1-ls2-ls6-black-cathedral-port-efi-intake-manifold-for-105mm-ls-throttle-body","title":"Holley® #300-123BK GM LS1\/LS2\/LS6 Black Cathedral Port EFI Intake Manifold for 105MM LS Throttle Body","description":"\u003ch2\u003eCOMPATIBLE: \u003c\/h2\u003e\n\u003ch2\u003e2004 - 2005 CADILLAC CTS-V (5.7L-LS6)\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cmeta charset=\"utf-8\"\u003e1998 - 2002 CHEVROLET CAMARO (5.7L-LS1)\u003c\/h2\u003e\n\u003ch2\u003e1997 - 2004 CHEVROLET CORVETTE (5.7L-LS1)\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cmeta charset=\"utf-8\"\u003e2001 - 2004 CHEVROLET CORVETTE Z06 (5.7L-LS6)\u003c\/h2\u003e\n\u003ch2\u003e2005 - 2008 CHEVROLET CORVETTE (6.0L-LS2)\u003c\/h2\u003e\n\u003ch2\u003e1998 - 2002 PONTIAC FIREBIRD (5.7L-LS1)\u003c\/h2\u003e\n\u003ch3 class=\"full_description\"\u003eThe Holley GM LS1\/LS2\/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1\/LS2\/LS6 style cylinder heads has outstanding potential for N\/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! • The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. • Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations • EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. • Cast aluminum construction. • Intended for use on N\/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM.\u003c\/h3\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eBase Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eTotal Height with 92\/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eRunner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eThrottle Body Flange Location, with 102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003ePlenum Top Gasket Type – 3\/32” Round O-ring Cord\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eMounting Flange Gasket Type – Standard LS3 Molded O-Ring\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003ePort Size – 2.49” Height x 1.21” Wide\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"attributes-table\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eBasic Operating RPM Range\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e3500-8000 RPM\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eBrand\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eHolley EFI\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eCategory Filter\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eIntake Manifolds\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eClearance Category\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eIntake Manifolds\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eColor\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eBlack\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eCast\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eEGR Port\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eNo\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eEmission Code\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e4\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eEngine\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eGM LS1\/LS2\/LS6\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eFinish\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eBlack\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eFront Height\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e12.32 inch\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eFront Maximum Height\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e12.32 IN\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eFuel System Type\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eEFI\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eGrade Type\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003ePerformance\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eIntake Port Gasket(s) Included\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eNo\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eManifold Type\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eHi-Ram\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eMaterial\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eAluminum\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eNitrous Bung(s) Included\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eNo\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003ePlenum Finish\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eBlack\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eProduct Type\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eIntake Manifold\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eRear Height\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e11.00 inch\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eRear Maximum Height\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e11 IN\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eRecommended Use\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eForced Induction\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eRemovable Runners\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eNo\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eRPM Power Band\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e3500-8000 RPM\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eSale Category\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eAir and Fuel Delivery\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eSingle Or Dual Plane Type\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eSingle Plane\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eThrottle Body Bore Diameter\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e105 MM\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eThrottle Body Included\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eNo\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eLimited 90 Day\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eUPC\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e090127688915\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003ePart Number\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e300-123BK\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cbr\u003eABOUT HOLLEY PERFORMANCE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"widget html top-border about\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"widget-content\"\u003e\n\u003ch2 class=\"inner_text\"\u003e\u003cem\u003eFor over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.\u003c\/em\u003e\u003c\/h2\u003e\n\u003ch1 class=\"inner_text\"\u003e\u003cstrong\u003eGuides:\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/documents.holley.com\/6bab86186782bdbd875a41b526671b59a1b5ab33.pdf\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Wrench_small.jpg?v=1528997396\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"brand_menu_area\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"brand_menu\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cimg src=\"https:\/\/images.holley.com\/prop65_warning.png\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch1\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eWARRANTY:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h1\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/documents.holley.com\/brand_warranties.pdf\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/HOLLEY_LOGO_01084891-b750-4005-a782-1f26e1aac8d0.png?v=1732392526\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Holley®","offers":[{"title":"Default Title","offer_id":41319314915422,"sku":"300-123BK","price":1299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Screenshot2024-12-05at6.58.00PM_c90a47aa-c8b0-40bb-9f54-bda42cdef0f0.png?v=1733491605","url":"https:\/\/10secondracing.com\/products\/holley%c2%ae-300-123bk-gm-ls1-ls2-ls6-black-cathedral-port-efi-intake-manifold-for-105mm-ls-throttle-body","provider":"10 Second Racing","version":"1.0","type":"link"}