Ford Performance M-6009-347 347ci Boss Short Block
Free Shipping$4,999.95
Small Block
347ci. Boss Short Block
- Cast Iron
- 4.030″ Bore
- 3.400″ Stroke
- 4-Bolt Main
- 8.2″ Deck Height
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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
Ford Performance M-6009-347 Features:
The Ford Performance 347 shortblock lets you build it your way by adding your choice of heads, cam, intake and oil pan.  It’s the perfect foundation to build a powerful 8.2″ deck engine for your vintage muscle car, street rod, Fox Body, or Late Model Mustang.  This is the same shortblock used in the 347 sealed racing crate engines, Part number M-6007-D347SR and M-6007-S347JR. Nothing but the best parts are used inside including: forged crankshaft, forged I-beam connecting rods with floating piston pins and the BOSS 302 block.
- Engine Type:Â 302-based Small Block Ford
- Displacement:Â 347 cubic inches
- Bore x Stroke:Â 4.030″ bore x 3.400″ stroke
- Block:Â Boss 4-bolt main block M-6010-BOSS302 with 8.2″ deck height
- Piston to Deck Height:Â .010″ below deck (nominal)
- Crankshaft:Â SCAT forged steel, 3.400″ stroke
- Connecting Rods: SCAT forged steel I-beam rods with floating pins and ARP® bolts
- Pistons:Â Mahle forged aluminum pistons with 1.5mm, 1.5mm, 3.0mm rings and 6cc valve reliefs
- Valve Relief Compatibility:Â X306, X307, Z304DA, Z304P, N351, Z2, X2, and other inline valve Windsor heads (verify piston-to-valve clearance)
- Camshaft Compatibility:Â Hydraulic roller camshaft compatible
- Balancing:Â Internally balanced; requires a 0-balance flywheel and damper
- Recommended Head Fasteners:Â M-6065-BOSS head bolts or M-6014-BOSS studs (application dependent)
- Cylinder Head Compatibility:Â Compatible with most aftermarket performance cylinder heads
- Valve Angle Design:Â Pistons designed for 20-degree valve angle heads; compatible with stock or most spread valve guide centerlines
- Works Well With:Â Ford Performance cylinder heads M-6049-Z2 and M-6049-X2
- Designed For:Â M-6049-X306, X307, Z304DA, Z304P, and N351 cylinder heads
- Not Designed For:Â Production 302/351W or M-6049-Y302, Y303, X302, X303, X304, X305 cylinder heads
- Assembly Status:Â Fully assembled and ready for cylinder heads, camshaft, and timing chain set
- Required Head Gaskets:Â M-6051-CP331 or M-6051-S331
- Recommended Harmonic Balancer:Â High-performance M-6316-D302
- Recommended Oil Pump:Â High-volume oil pump M-6600-D2
- Fitment:Â 302 bolt pattern, oil pan, and timing cover
- Build Quality:Â Constructed with all new parts
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 | Short Block |
|---|---|
| Product Line | Ford Performance Short Blocks |
| Assembled | Yes |
| Connecting Rod Beam Style | I-beam |
| Connecting Rod Material | Forged 4340 steel |
| Crankshaft Material | Forged 4340 steel |
| Deck Height | 8.2 in (208.28 mm) |
| Engine Balance | Internal |
| Engine Block Material | Cast iron |
| Flexplate Included | No |
| Flywheel Included | No |
| Harmonic Balancer Included | No |
| Main Journal Type | 302 mains |
| Oil Pan Included | No |
| Package Depth | 21.75 |
| Package Height | 31.00 |
| Package Width | 25.25 |
| Part Category | Performance Parts |
| Part Fitment | Semi Universal |
| Piston Material | Forged aluminum |
| Quantity | Sold individually |
| Shipping Weight | 311.20 |
| Short Block Piston Style | Flat top |
| Timing Cover Included | No |
| Vendor Part Number | M-6009-347 |
Build Your Engine Exactly How You Want It From The Block Up
Ford Racing offers these short blocks to allow anyone to build an engine for their Ford exactly how they want it. The Ford Short Block is the perfect start to any Ford engine build. Short block offerings start at the versatile modular 5.0L Stroker block, all the way up to the base of a 460CI. When using Ford Racing Short Blocks to build your next engine, the options for performance are endless!










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