{"product_id":"383-extreme-stroker-engine","title":"383 Extreme Stroker Engine","description":"The Smeding Performance 383 Extreme is a crate engine engineered to provide big-block power in a small-block Chevy package. It is constructed using a heavy-duty 4-bolt main block with a 9.025\" deck height and a 1-piece rear main seal. Internals consist of a forged 4340 steel crankshaft with a 3.800\" stroke, 5140 forged steel I-beam rods, and custom dish-style hypereutectic aluminum pistons resulting in a 9.8:1 compression ratio.\n\nPerformance is optimized by Smeding aluminum cylinder heads with 180cc intake ports and 2.02\"\/1.60\" valves, paired with a hydraulic roller camshaft featuring .510\"\/.521\" lift and 231°\/236° duration. The setup is topped with a mid-rise air-gap dual-plane intake and full-roller 1.5 ratio rocker arms.\n\nProper operation of this engine requires a torque converter with a 2,400-2,800rpm stall speed. It is backed by a 3-year, unlimited-mile warranty for added peace of mind.","brand":"Smeding Performance","offers":[{"title":"Default Title","offer_id":52663691837752,"sku":"383EXT450","price":8100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687139495.webp?v=1784329029","url":"https:\/\/store.motormia.co\/products\/383-extreme-stroker-engine","provider":"MOTORMIA","version":"1.0","type":"link"}