ATK Engines High Performance Crate Engine Small Block Chevy 383 ci 525 HP / 515 ft.-lbs. TQ
059-HP107
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Base Engine
ATK Core Return Process
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Please CLICK HERE for ATK Core Return Process
This ATK 383 stroker engine built for the ruggedness for high-performance street and strip applications producing great power and a lopey idle.
NOTE:
- Core return can be any Small Block Chevy 350ci engine, except 1992-1997 LT1 style engines
- This engine will not work in vehicles with power brake or air conditioning
Engine Specifications
- Horsepower: 525 hp
- Torque: 515 ft.-lbs.
Block Information:
- Seasoned OE 4-bolt main 1pc seal
- Bore/Stroke: 4.040 in. x 3.750 in.
- Displacement: 383 ci
- Brass freeze plugs
Rotating Assembly:
- Crankshaft: Scat 4340 forged
- Balance: External rear, internal front
- Rods: Scat 4340 forged H-Beam 5.700 in. with ARP 8740 bolts
- Compression Ratio: 10.0:1
- Pistons: Forged
- Rings: Moly
Camshaft Specs:
- Camshaft: Hydraulic roller
- Cam Duration @ .050 in.: Intake 246 / Exhaust 250
- Cam Lift: Intake .603 in. / Exhaust .609 in.
- Lobe Separation Angle: 110 LSA
- Timing Chain: Double roller
Cylinder Head Information:
- Cylinder Heads: ATK Pro-Filer Aluminum
- Combustion Chamber: 70 cc
- Intake Runner: 210 cc
- Valve Size: 2.050 in. Intake / 1.600 in. Exhaust
- Rocker Arms: Biller aluminum roller rockers 1.6 ratio
Oil Pan Information:
- Oil Pan: Moroso Rear sump 7 qt with windage tray
- Oil Pump: Melling standard volume
Base Engines
- Short Block
- Camshaft
- Timing Set
- Cylinder Heads
- Valve Covers
- Timing Cover
- Oil Pan
- Oil Pump & Pickup Tube
- Flexplate
Recommended Engine Components
- Carburetor: Quick Fuel 750 cfm #793-Q-750
- Distributor: Pro-Billet (iron gear)
- Exhaust: 1 3/4 in. Headers
- Firing Order: 18436572
- Flexplate/Flywheel: External balance 168-tooth
- Fuel Pump: Holley Mechanical 110 gph #510-12-327-11
- Fuel Octane: 91+
- Harmonic Balancer: Internal balance
- Intake Manifold: Single Plane Holley Strip Dominator #510-300-25
- Spark Plugs: Autotile #417-3923
- Spark Plug Gap: .035 in.
- Stall Converter: 3000+
- Oil: 10W30
- Oil Filter: Wix or K&N
- Timing: 34-36 Degrees
- Water Pump: Long pump
Disclaimer: The parts listed are ATK's recommendations of parts to be used to obtain the power figures listed. Power figures can vary based on parts used by the end-user. Some modifications to the vehicle may be required using these and or other aftermarket parts.
Engine Break-In Procedure
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 the process 2-3 more times. Do not idle the engine for an 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.
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Specifications:
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Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.