{"product_id":"atk-engines-hp89c-gm-high-performance-350-long-block-crate-engine","title":"ATK Engines HP89C GM High Performance 350 Long Block Crate Engine","description":"\u003cp\u003eEngine Specifications:• HP: 390• TQ: 420• 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: 220\/224 @50 .528in\/.536ex 110LSA• Timing Chain: Double Roller• Cylinder Heads: ATK High Performance aluminum with 2.020 in. \/1.600 ex. valves• Rocker Arms: Billet aluminum roller rockers 1.6 ratio• Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some corvettes and 62-67 chevy II’s)• Oil Pump: Melling STD Volume• Flexplate\/Flywheel: Externally Balanced – Pioneer #FRA-159• Balancer: Internally Balanced – PowerBond #PB1046-N• Intake Manifold: ATK dual plane intake• Distributor: HEI (Iron Gear)• Water Pump: OE long pump• Carburetor: Quick Fuel 680CFM Vacuum secondary’s electric choke #HR-680• Fuel Pump: Mechanical fuel pump• Spark Plugs: Autolite #3923• Spark Plug Wires: 8mm Engine Info:• Oil: Conventional \/ Non Synthetic 10W30• Oil Filter: Wix or K\u0026amp;N• Timing: 34-36 Degrees• Spark Plug Gap: .035”• Firing Order: 18436572• Octane: 91+• Stall Converter: 2200-2800• 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\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrate Engine Type:\u003c\/strong\u003e Long Block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Displacement:\u003c\/strong\u003e 350 cu. in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 390 horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e 10.1:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque:\u003c\/strong\u003e 420 ft.\/lbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamshaft Type:\u003c\/strong\u003e Hydraulic Roller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Material:\u003c\/strong\u003e Hypereutectic Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamshaft Duration (.050 in):\u003c\/strong\u003e 220° intake \/ 224° exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamshaft Lift (in):\u003c\/strong\u003e .528 intake \/ .536 exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore x Stroke (in):\u003c\/strong\u003e 4.040\" x 3.480\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Manifold Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnecting Rod Material:\u003c\/strong\u003e Powdered Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Covers Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Balance:\u003c\/strong\u003e Internal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Heads Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Main Seal Style:\u003c\/strong\u003e 1-piece\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrottle Body 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 Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Pump Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarmonic Balancer Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexplate Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlywheel Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Cleaner Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plugs Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Wires Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComputer Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Harness Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Fuel:\u003c\/strong\u003e 91 Octane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Style:\u003c\/strong\u003e Stock\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":67752133656896,"sku":null,"price":2790.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/7757\/6256\/files\/35020037_L850_1aae743b-a99d-4dc9-9d7c-42c706011289-768x768.jpg?v=1791839254","url":"https:\/\/vorlaxauto.com\/products\/atk-engines-hp89c-gm-high-performance-350-long-block-crate-engine","provider":"Vorlax Auto","version":"1.0","type":"link"}