{"product_id":"dual-plane-intake-manifold","title":"Dual Plane Intake Manifold","description":"The Speedway Motors dual plane intake manifold is engineered for popular small block Chevy applications from 1957-1986. This high-rise manifold features oversized runners and a split dual plane plenum designed to support larger displacement engines, such as 383 strokers, and enhance usable RPM range. It provides a power band from 1,500 to 6,500 RPM, making it suitable for both street and strip use.\n\nConstructed from cast aluminum with a natural finish, this intake manifold measures 5 inches in height at the carb pad, allowing it to fit under most stock hoods, with the exception of Corvette models. The dual plane design offers street manners while providing single plane-like power at higher RPMs. It includes dual distributor hold downs and offers clearance for large cap HEI distributors. The manifold features a square bore carburetor flange compatible with common Holley and Edelbrock carburetors, requiring no adapter.\n\nInstallation of this intake manifold requires specific considerations. It does not have provisions for stock oil fill tubes or stock exhaust-heated chokes. Additionally, due to extra material around the intake runners, most standard valve covers will not fit; valve covers with an upper-side cutout are necessary. It is recommended to use Fel-Pro 1204-style intake gaskets with 1.23\" wide x 1.99\" tall port holes. Extra thick valve cover gaskets are also recommended for sufficient valve cover clearance.","brand":"Speedway Motors","offers":[{"title":"Default Title","offer_id":52663780213048,"sku":"91011465-PLN","price":218.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687713051.jpg?v=1784329547","url":"https:\/\/store.motormia.co\/products\/dual-plane-intake-manifold","provider":"MOTORMIA","version":"1.0","type":"link"}