{"product_id":"lsx454-7-4l-crate-engine","title":"LSX454 7.4L Crate Engine","description":"The Chevrolet Performance LSX454 Crate Engine (19417357) is engineered for enthusiasts seeking big-block power in a small-block package, leveraging advanced LSX technology. This new engine boasts a displacement of 454 cubic inches (7.4L) and is built with a cast-iron LSX block featuring 6-bolt, cross-bolted main caps, and an all-forged, super-tough rotating assembly for maximum durability.\n\nTopping this robust block are LSX-LS7 port aluminum cylinder heads with a 6-bolt attachment, designed for enhanced airflow. The engine produces an impressive 627 horsepower at 6300 RPM and 586 lb-ft of torque at 5100 RPM, offering significant performance gains. Key specifications include a 11.0:1 compression ratio, 4.185-inch bore, and 4.125-inch stroke, along with an OEM Type Hydraulic Roller camshaft. The cylinder heads feature 70cc chambers and 2.20-inch intake valves.\n\nInstallation considerations include that the LSX454 valve covers do not have provisions for mounting ignition coil brackets, requiring aftermarket or custom relocation brackets. Additionally, the 8-bolt crankshaft flange may necessitate an adapter for compatibility with certain transmissions. An intake manifold is not included; compatible options include a Holley Hi-Ram or an MSD Atomic LS7 Intake, though a specific GM single-plane intake manifold (P\/N 19244033) has been discontinued.","brand":"Chevrolet Performance","offers":[{"title":"Default Title","offer_id":52662822273336,"sku":"19417357","price":17257.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687500338.jpg?v=1784321450","url":"https:\/\/store.motormia.co\/products\/lsx454-7-4l-crate-engine","provider":"MOTORMIA","version":"1.0","type":"link"}