Description: HP: 390, TQ: 420, Block: OE roller block 4 bolt main 1pc seal 1996-2000, Bore/Stroke: 4.040” x 3.480”, Displacement: 350CI ATK Engines HP89 Small Block Chevy 350 Base Engine, 390HP Sku # 35020026 Mfr. Part # HP89 Condition New Brand ATK Engines Sold Each Details Info Great crate engine with a noticeable idle, very street able with lots of power. Engine 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 Recommended Components: • 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: Holley mechanical 110GPH #12-327-11 • Spark Plugs: Autolite #3923 • Spark Plug Wires: 8mm Engine Info: • Oil: Conventional / Non Synthetic 10W30 • Oil Filter: Wix or K&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. These engines are year and model specific. All cores must be returned to ATK as they will provide the bill of lading and schedule the pickup once contacted. Do NOT return cores to Speedway Motors. Please refer to the link under the Installation Details or click for more information. Installation Tips This product has a core charge built into the selling price. You can receive a refund of this core charge by returning a suitable old core to ATK Engines. A packet of core return paperwork will be mailed to you to assist with this process. For additional information, please see Specs Rear Main Seal Style 1-piece Piston Material Hypereutectic Aluminum Cylinder Head Material Aluminum Crate Engine Type Long Block Engine Balance Internal Intake Manifold Included No Valve Covers Included Yes Accessory Bolt Holes Drilled No Cylinder Heads Included Yes Carburetor Included No Throttle Body Included No Distributor Included No Oil Pan Included Yes Timing Cover Included Yes Water Pump Included No Harmonic Balancer Included No Flexplate Included No Flywheel Included No Air Cleaner Included No Spark Plugs Included No Spark Plug Wires Included No Computer Included No Wiring Harness Included No Engine Displacement 350 Horsepower 390 Camshaft Type Hydraulic Roller Compression Ratio 10.0:1 Camshaft Duration (.050 in) 220 intake / 224 exhaust Camshaft Lift (in) .528 intake / .536 exhaust Recommended Fuel 91 Octane Spark Plug Style Stock Bore x Stroke (in) 4.040" x 3.480" Torque 420 ft./lbs. MFG. Part # HP89 Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
Price: 4308.99 USD
Location: Lincoln, Nebraska
End Time: 2025-01-11T21:07:50.000Z
Shipping Cost: 275 USD
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Item Specifics
Return shipping will be paid by: Buyer
Returns Accepted: Returns Accepted
Item must be returned within: 60 Days
Refund will be given as: Money Back
Return policy details:
Brand: ATK Engines
Engine Size: 350 cu. in.
Type: Crate Engines
Manufacturer Part Number: HP89
California Prop 65 Warning: False
