{"product_id":"street-performance-rotating-assembly-4-030-bore-3-480-stroke","title":"Street Performance Rotating Assembly 4.030\" Bore \/ 3.480\" Stroke","description":"The Eagle Specialty Products EAGB15402E030 is a balanced street performance rotating assembly kit engineered for Chevrolet Small Block engines utilizing a 2-piece rear main seal. This comprehensive kit aims to deliver a perfect balance of performance, reliability, and affordability for street applications. The assembly includes a cast steel crankshaft, cast aluminum pistons with a flat top and -7cc dome volume, and 5.700\" Eagle SIR 5140 steel I-beam connecting rods that utilize a press-pin design. It also comes complete with Moly (pre-gapped) piston rings, King rod bearings, and King main bearings, all internally balanced for smooth operation.\n\nThis rotating assembly is built with a 4.030\" bore and a 3.480\" stroke, yielding a total displacement of 355 cubic inches. The piston design allows for varying compression ratios depending on the cylinder head combustion chamber volume: 10.5:1 with 58cc heads, 9.8:1 with 64cc heads, and 8.7:1 with 76cc heads. This makes it a versatile option for builders aiming for specific compression targets. The kit is suitable for applications up to 500 horsepower.\n\nNote that this assembly is internally balanced, meaning a neutral flexplate and harmonic balancer must be purchased separately. While it includes pistons, rings, pins, connecting rods, and bearings, it does not include a harmonic balancer, flexplate, flywheel, camshaft, lifters, oil pump, or gaskets.","brand":"Eagle Specialty Products","offers":[{"title":"Default Title","offer_id":52872894120248,"sku":"EAGB15402E030","price":1205.97,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/street-performance-rotating-assembly-4-030-bore-3-480-stroke","provider":"MOTORMIA","version":"1.0","type":"link"}