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ATK Engines HP14M

ATK Engines High Performance Crate Engine Small Block Ford 331ci / 380HP / 385TQ


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ATK Engines High Performance Crate Engine Small Block Ford 331ci / 380HP / 385TQ $5,680.99
Out of stock
High Performance Crate Engine
  • Small Block Ford 331ci
  • 380HP / 385TQ
  • Front Sump Oil Pan
  • Mid Dress Engine
  • ATK Engines HP14M Details

    Mid Dress Engine

    Engine Info

    • Balancer: External 28oz
    • Distributor: Pro Billet MSD #121-83521 (steel gear)
    • Exhaust: 1-5/8" Headers
    • Firing Order: 13726548
    • Flexplate: External 28oz 164 tooth
    • Intake Manifold: Edelbrock Performer RPM dual plane #350-7121
    • Octane: 91+
    • Oil: 10W30 (Conventional / Non Synthetic)
    • Oil Filter: Wix or K&N
    • Spark Plug Gap: .035"
    • Stall Converter: 2400-2800
    • Timing: 34-36 Degrees (Vacuum port plugged on carburetor)
    • Water Pump: RH inlet - standard rotation

    Recommended Components

    • Carburetor: Quick Fuel 680cfm #793-HR-680-VS (vacuum secondary's, electric choke)
    • Fuel Pump: Holley Mechanical 110gph #510-12-289-11 
    • Spark Plugs: Autolite #417-3923
    • Spark Plug Wires: 8mm


     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 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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    In 2007 ATK launched a High Performance Division with one of the finest engine shops in the country. By reverse engineering all of their engines, they are able to eliminate any OEM deficiencies. This makes an ATK built crate engine have a superior design over the original engine by incorporating better components when needed. These quality built engines are offered in three different stages for ease of finishing an engine swap. ATK HP engines feature a 24 month/unlimited mile warranty.

    Engine Specifications

    This engine was designed to be streetable, with a noticeably idle and works with power accessories.

    • Horsepower: 380 hp
    • Torque: 385 lb/ft

    Block Information:

    • Seasoned OE roller block 1987-1995
    • Bore/Stroke: 4.040" x 3.250"
    • Displacement: 331ci

    Rotating Assembly:

    • Crankshaft: Scat nodular iron
    • Balance: 28oz external balance
    • Rods: Scat 4340 forged I beam with ARP 8740 bolts
    • Compression Ratio: 10:1
    • Pistons: Forged
    • Rings: Moly

    Camshaft Specs:

    • Camshaft: Hydraulic roller
    • Cam Duration @ .050": Intake 220 / Exhaust 224
    • Cam Lift: Intake .512" / Exhaust .512"
    • Lobe Separation Angle: 112lsa
    • Timing Chain: Double roller

    Cylinder Head Information:

    • Cylinder Heads: Dart Pro 1 aluminum
    • Combustion Chamber: 58cc
    • Intake Runner: 170cc
    • Valve Size: 2.02" Intake / 1.60" Exhaust
    • Rocker Arms: Aluminum 1.6 roller

    Oil Pan Information:

    • Oil Pan: Front sump
    • Oil Pump: Melling high volume

     Base Engines

    • Short Block
    • Camshaft
    • Timing Set
    • Cylinder Heads
    • Valve Covers
    • Timing Cover
    • Oil Pan
    • Oil Pump & Pickup Tube
    • Flexplate
    • Harmonic Balancer

    Mid Dress Engines

    • Consists of Base Engine Build
    • Intake Manifold
    • Distributor
    • Water Pump 

    Complete Engines

    • Consists of Mid Dress Engine Build
    • Fuel Pump
    • Carburetor
    • Spark Plug Wires
    • Spark Plugs


    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    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.


    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.