ATK Engines HP89CPOL High-Performance Small Block Chevy 350ci Crate Engine – 390 HP / 420 TQ / Polished
Free Shipping$3,857.99
Complete Engine
High-Performance Crate Engine
- Small Block Chevy 350 ci.
- 390 HP/420 ft.-lbs TQ
- Polished
- Chevrolet Embossed
- Includes:
- Mid Dress Engine Build
- Fuel Pump
- Carburetor
- Spark Plug Wires
- Spark Plugs
- Valve Covers
- Air Cleaner
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Confirm your vehicle, VIN and application before ordering. Call (478) 379-2400 or ask about fitment.
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Description
ATK Engines HP89CPOL Engine Features:
- Horsepower: 390
- Torque: 420
- Block: 1996-2000 OE roller block 4-bolt main 1-piece seal
- Bore/Stroke: 4.040 in. x 3.480 in.
- Displacement: 350ci
- Crankshaft: OE Reground external balance rear of the crank/internal balance front of the crank
- Rods: OE powder metal 5.700 in.
- Pistons: Hypereutectic 10:1 Compression
- Rings: Moly
- Camshaft: Hyd. Roller
- Cam Specs: 220/224 @ 50 .528 in/.536 ex 110 LSA
- 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
- Valve Covers: Billet Specialties cast aluminum polished “Chevrolet” with matching PCV valve & push in breather
- Flexplate/Flywheel: Externally Balanced – Pioneer #FRA-159
- Air Cleaner: 14 in. x 3 in. Super Flow air cleaner system with washable filter (drop base lower)
- Balancer: Internally Balanced – PowerBond #PB1046-N
- Intake Manifold: ATK dual plane intake
- Distributor: Black HEI (Iron Gear)
- Water Pump: OE long pump
- Thermostat Housing: Chrome with a 180-degree thermostat
- Carburetor: Quick Fuel 680CFM Vacuum secondary’s electric choke #HR-680
- Fuel Pump: Holley mechanical 110GPH #12-327-11
- Fuel Line: Dual inlet AN Stainless Hose from pump to carb
- Spark Plugs: Autolite #3923
- Spark Plug Wires: 8 mm
ATK Engines HP89CPOL Engine Info:
- Oil: Conventional / Non Synthetic 10W30
- Oil Filter: Wix or K&N
- Timing: 34-36 Degrees
- Spark Plug Gap: .035 in.
- Firing Order: 18436572
- Octane: 91+
- Stall Converter: 2200-2800
- Exhaust: 1 5/8 in. Headers
Disclaimer: Verify compatibility before installation. Vehicle modifications may be required.
Emissions Note: This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
| Part Type | Engine |
|---|---|
| Product Line | ATK HP Crate Engines Small Block Chevy 350 ci / 390 HP / 420 FT.-LBS. |
| Air Cleaner Included | Yes |
| Assembled | Yes |
| Carburetor Included | Yes |
| Cylinder Head Material | Aluminum |
| Cylinder Heads Included | Yes |
| Distributor Included | Yes |
| Engine Balance | External/Internal |
| Engine Block Material | Cast Iron |
| Engine Displacement | 350 ci |
| Engine Make/Size | Chevy Small Block |
| Engine Type | High-Performance Crate Engine |
| Flexplate Included | No |
| Flywheel Included | No |
| Harmonic Balancer Included | Yes |
| Intake Manifold Included | Yes |
| Intake Manifold Type | Carbureted |
| Oil Pan Included | Yes |
| Package Depth | 40.00 |
| Package Height | 37.00 |
| Package Width | 27.00 |
| Part Category | Performance Parts |
| Part Fitment | Semi Universal |
| Quantity | Sold individually |
| Shipping Weight | 460.00 |
| Spark Plug Wires Included | Yes |
| Spark Plugs Included | Yes |
| Throttle Body Included | No |
| Timing Cover Included | Yes |
| Valve Covers Included | Yes |
| Vendor Part Number | HP89CPOL |
| Water Pump Included | Yes |
Use or break-in oil or conventional (non-synthetic) 10w30 oil with zinc additive for the first 500 miles of operation. Do not drive for long periods at any single speed, always vary your speed. Do not tow a trailer or put other heavy loads on the vehicle. It is best to avoid long periods of idling during this period. Check the engine oil and coolant levels daily.
Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM\\\'s, with no-load on the engine for the first 30 minutes. Let the engine cool down completely and repeat process 2-3 more times. Do not idle the engine for any extended period at this time, this is critical to break in the camshaft.
At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil with a zinc additive. Check fuel and ignition settings, adjust valves (where applicable). Drive the next 500 miles normally, without high RPM\\\'s (below 5000 RPM), hard use, or extended periods of high loading or long periods of idling.
Change the oil and oil filter again at 1,000 miles. Continue using conventional (non-synthetic) oils and zinc additive, until about 4,000 miles. At that point, you may run a quality 10w30 synthetic oil if you choose. Use of oil with zinc or a zinc additive for the life of your engine is recommended.
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