Engines and Components Engines, Blocks and Components

ATK ENGINES

FORD 347 ENGINE 450 HP

$7,336.12

SKU: A040 HP100

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Description

The ATK HP100 is a 347 cubic inch stroker crate engine for Ford vehicles, available in base, mid-dress, or complete configurations. It's rated at 450 horsepower and 440 lb/ft of torque, designed to be street-able with power accessories. The base engine includes a short block, camshaft, timing set, heads, valve covers, timing cover, oil pan, oil pump, flexplate, and harmonic balancer.

Engine Specifications:
HP: 450, TQ: 440, Block: Seasoned OE roller block (1987-1995), Bore/Stroke: 4.040" x 3.400", Displacement: 347ci, Crankshaft: Scat nodular iron (external balance 28oz), Connecting Rods: Scat 4340 forged I beam with ARP 8740 bolts, Pistons: Forged 10:1 compression, Rings: Moly, Camshaft: Hydraulic Roller (231/235 @.050" duration, .544"in/.565"ex lift, 112LSA), Timing Chain: Double roller, Cylinder Heads: ATK HP aluminum (58cc/205cc, 2.08"/1.60" valves), Rocker Arms: Billet aluminum roller rockers 1.6 ratio, Oil Pan: Front sump, Oil Pump: Melling high volume, Balancer: External balance 28oz (with Scat kit), Flexplate/Flywheel: External balance 28oz 164 tooth (with Scat kit), Intake Manifold: Edelbrock Performer RPM Air Gap dual plane, Distributor: Pro billet RTR (upgraded melonite gear), Water Pump: Early RH inlet standard rotation, Carburetor: Quick Fuel 670CFM vacuum secondaries electric choke #BR-67256, Fuel Pump: Mechanical, Spark Plugs: Autolite #3923, Spark Plug Wires: 8mm.

Engine Info:
Oil: Conventional / Non Synthetic 10W30, Oil Filter: Wix or K&N per application, Timing: 34-36 Degrees with vacuum port plugged on carburetor, Spark Plug Gap: .035”, Firing Order: 13726548, Octane: 91+, Stall Converter: 2400-2800, Exhaust: 1 5/8 Headers, Emissions: Not legal for sale/use on controlled (emissions) vehicles.

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Specifications

BrandATK ENGINES
Part NumberA040 HP100

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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