{"product_id":"shp-400-short-block-engine-assembly","title":"SHP 400 Short Block Engine Assembly","description":"The CNC Competition 427\/434 Dart Short Block is an engine assembly designed for performance enthusiasts. It is built using a Dart SHP block and features a 4.000-inch stroke Eagle 4340 forged steel crankshaft paired with Eagle 6.0 H-beam stroker connecting rods, which are bushed for pins and equipped with ARP 8740 bolts. The assembly includes Mahle forged -5cc flat-top pistons and a high-performance plasma moly piston ring set. For reliable bearing performance, ACL\/Clevite 77 rod and main bearings are utilized, along with Dura Bond cam bearings and a Dura Bond finishing kit. The short block also comes with brass freeze plugs, a Fel-Pro rear main seal, and is a standard bore unless otherwise noted.\n\nThis short block engine is professionally machined, balanced, assembled, and blueprinted in-house by CNC-Motorsports. A balance card and blueprint sheet will be provided to the customer. The compression ratio with 64cc heads is 12.3:1. Options for customization are available, including ARP 2000 rod bolts, different Dart blocks (Little Sportsman or Little M), ARP main studs, coated main and rod bearings, piston oil squirters\/cooling jets, roller cam bearings, and different lifter bore sizes. This engine is suitable for Power Adder or Marine applications.","brand":"Dart","offers":[{"title":"Default Title","offer_id":52687588557112,"sku":"CNC-9374-E","price":6050.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664702271.jpg?v=1784885346","url":"https:\/\/store.motormia.co\/products\/shp-400-short-block-engine-assembly","provider":"MOTORMIA","version":"1.0","type":"link"}