{"id":521,"date":"2026-02-18T17:22:05","date_gmt":"2026-02-18T17:22:05","guid":{"rendered":"https:\/\/hotroddieselsolutions.com\/?post_type=product&#038;p=521"},"modified":"2026-03-27T17:52:18","modified_gmt":"2026-03-27T17:52:18","slug":"holley-modular-ultra-lo-ram-efi-manifold-ls1-2-6","status":"publish","type":"product","link":"https:\/\/hotroddieselsolutions.com\/index.php\/product\/holley-modular-ultra-lo-ram-efi-manifold-ls1-2-6\/","title":{"rendered":"Holley Modular Ultra Lo-Ram EFI Manifold LS1\/2\/6"},"content":{"rendered":"<div class=\"full_description\">The 300-621 Ultra Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors. The Holley LS1\/2\/6 Ultra Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1\/2\/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood.<\/div>\n<h3>Features:<\/h3>\n<ul class=\"productpage_list\">\n<li>Intake design facilitates custom inlet duct and throttle body placement<\/li>\n<li>Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification<\/li>\n<li>Designed for GM LS Gen III and IV engines equipped with GM LS1\/2\/6 (cathedral port) cylinder heads<\/li>\n<li>Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.<\/li>\n<li>Low height to fit under a stock or mildly modified hood.<\/li>\n<li>With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used<\/li>\n<li>Front entry plenum flange allows design &amp; fabrication of special throttle body adapters or inlet ducts for custom installations<\/li>\n<li>High volume fuel rails and mounting hardware included with \u00be\u201d-16 o-ring ports (8 AN)<\/li>\n<li>Modular design allowing the use of front-feed plenum entry<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The 300-621 Ultra Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel [&hellip;]<\/p>\n","protected":false},"featured_media":522,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[15,32],"product_tag":[],"class_list":["post-521","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-uncategorized","product_cat-intakes","product_shipping_class-35"],"_links":{"self":[{"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/product\/521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/comments?post=521"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/media\/522"}],"wp:attachment":[{"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/media?parent=521"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=521"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hotroddieselsolutions.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}