{"product_id":"atk-hp57-chevy-350-base-engine-1987-1991-corvette","title":"ATK HP57 Chevy 350 Base Engine 1987-1991 Corvette","description":"\u003cp\u003eThis engine is a performance replacement for 87-91 Corvettes, smooth idle great daily driver. Engine Specifications: HP: 289 TQ: 370 Block: OE roller block 4 bolt main 1pc seal 1996-2000 Bore\/Stroke: 4.040” x 3.480” Displacement: 350CI Crankshaft: OE Reground external balance rear of the crank\/internal balance front of the crank Rods: OE powder metal 5.7” Pistons: Hypereutectic 10:1 Compression Rings: Moly Camshaft: Hyd. Roller Cam Specs: 207\/214 @50 .411in\/.428ex 112LSA Timing Chain: Double Roller Cylinder Heads: Edelbrock performer aluminum 60cc\/165cc 2.02\/1.60 Rocker Arms: Stamped steel rockers 1.6 ratio Oil Pan: Rear sump 5qt (Standard SBC oil pan, may not fit some Corvette’s. If not, you must use your original oil pan) Oil Pump: Melling STD Volume Recommended Components: Flexplate\/Flywheel: Externally Balanced – Pioneer #FRA-159 Balancer: Internally Balanced – PowerBond 6.75” #PB2221-N Intake Manifold: Stock TPI Intake Distributor: Stock Distributor (Iron Gear) Water Pump: Stock Fuel Pump: Stock Spark Plugs: Autolite #3926 Spark Plug Wires: Stock Engine Info: Oil: Conventional \/ Non Synthetic 10W30 Oil Filter: Wix or K and N Timing: 34-36 Degrees (set with ECM) Spark Plug Gap: .035” Firing Order: 18436572 Octane: 91+ Stall Converter: Stock Exhaust: 1 5\/8 Headers Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. . ATK reserves the right to substitute parts used in engines if necessary.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOil: Conventional \/ Non Synthetic 10W30\u003c\/li\u003e\n\u003cli\u003eOil Filter: Wix or K\u0026amp;N per application\u003c\/li\u003e\n\u003cli\u003eTiming: 34-36 Degrees\u003c\/li\u003e\n\u003cli\u003eSpark Plug Gap: .035”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Displacement:\u003c\/strong\u003e 350 cu. in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Manifold Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Pan Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming Cover Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarmonic Balancer Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexplate Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlywheel Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Type:\u003c\/strong\u003e Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMFG. Part #:\u003c\/strong\u003e HP57\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN Code:\u003c\/strong\u003e 00653517147395\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold in Quantity:\u003c\/strong\u003e Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e ATK Engines\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Erise Motors","offers":[{"title":"Default Title","offer_id":67752132346176,"sku":null,"price":3500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/7757\/6256\/files\/35020160_L1450_5c95e2da-ed86-4e08-95cf-e918f38bf8f6-510x510.jpg?v=1791839217","url":"https:\/\/vorlaxauto.com\/products\/atk-hp57-chevy-350-base-engine-1987-1991-corvette","provider":"Vorlax Auto","version":"1.0","type":"link"}