ATK Engines High-Performance Small Block Ford 347ci Crate Engine – 415 HP / 430 TQ
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Mid Dress Engine
High-Performance Crate Engine
- Small Block Ford 347 ci.
- 415 HP/430 ft.-lbs.TQ
- Dual Sump Oil Pan (Fox Body)
- Mid Dress Engine Includes:
- Base Engine Build
- Intake Manifold
- Distributor
- Water Pump
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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
This engine was designed to be streetable, with a noticeably idle and works with power accessories.
- Horsepower: 415 hp
- Torque: 430 lb/ft
Block Information:
- Seasoned OE roller block 1987-1995
- Bore/Stroke: 4.040″ x 3.400″
- Displacement: 347ci
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
Recommended Components
- Balancer: External 28oz
- Exhaust: 1-5/8″ Headers
- Firing Order: 13726548
- Flexplate: External 28oz 164 tooth
- 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)
- Carburetor: Quick Fuel 680cfm #793-HR-680-VS (vacuum secondary’s, electric choke)
- Distributor: Pro Billet MSD #121-83521 (steel gear)
- Intake Manifold: Weiand Stealth dual plane #925-8020WND
- Fuel Pump: Holley Mechanical 110gph #510-12-289-11
- Spark Plugs: Autolite #417-3923
- Spark Plug Wires: 8mm
- Water Pump: LH inlet – reverse rotation
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 Ford 347ci / 415HP / 430TQ |
| Cylinder Head Material | Aluminum |
| Engine Block Material | Cast iron |
| Engine Displacement | 347 ci. |
| Engine Make/Size | Ford Small Block |
| Engine Type | High-Performance Crate Engine |
| 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 | 435.00 |
| Vendor Part Number | HP20M |
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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