ATK Engines HP99C High-Performance Small Block Chevy 350ci Crate Engine – 290 HP / 375 TQ
Free Shipping$2,729.00
Complete Engine
High Performance Crate Engine
- Small Block Chevy 350ci
- 290HP / 375TQ
- Complete Engine
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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
Engine Specifications
Classic 350 engine with great street manners, and vacuum for all your power accessories.
- Horsepower: 290 hp
- Torque: 375 lb/ft
Block Information:
- Seasoned OE 2 bolt main 1pc seal 1996-2000
- Bore/Stroke: 4.060″ x 3.480″
- Displacement: 350ci
Rotating Assembly:
- Crankshaft: OE Reground 1 piece seal crank
- Balance: External rear, internal front
- Rods: OE powder metal 5.7″
- Compression Ratio: 9.4:1
- Pistons: Hypereutectic
- Rings: Moly
Camshaft Specs:
- Camshaft: Hydraulic roller
- Cam Duration @ .050″: Intake 191 / Exhaust 194
- Cam Lift: Intake .414″ / Exhaust .428″
- Lobe Separation Angle: 111lsa
- Timing Chain: Single roller
Cylinder Head Information:
- Cylinder Heads: Vortec cast iron
- Combustion Chamber: 64cc
- Intake Runner: 165cc
- Valve Size: 1.94″ Intake / 1.50″ Exhaust
- Rocker Arms: Stamped steel 1.5
Oil Pan Information:
- Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some Corvettes, and 1962-1967 Chevy II’s)
- Oil Pump: Melling standard volume
Engine Info
- Carburetor: Quick Fuel 670cfm vacuum secondary electric choke #793-BR-67256
- Balancer: 8″ internal balance
- Distributor: HEI (iron gear)
- Flexplate: External balance 168 tooth 1987-Up
- Intake Manifold: ATK HP dual plane
- Firing Order: 18436572
- Octane: 91+
- Spark Plugs: Autolite #417-605
- Spark Plug Wires: 8mm
- Water Pump: OE long pump
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 350ci / 290HP / 375TQ |
| Cylinder Head Material | Cast iron |
| Engine Block Material | Cast iron |
| Engine Displacement | 350 ci. |
| Engine Make/Size | Chevy Small Block |
| Engine Type | High-Performance Crate Engine |
| Package Depth | 31.50 |
| Package Height | 30.25 |
| Package Width | 39.75 |
| Part Category | Performance Parts |
| Part Fitment | Semi Universal |
| Quantity | Sold individually |
| Shipping Weight | 435.00 |
| Vendor Part Number | HP99C |
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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