Ford Performance 347 ci Boss Short Block Assembly by Ford Performance

Price: 5262.99 USD
Availability: InStock

Ford Performance 347 ci Boss Short Block Assembly

Start your new engine build with a great foundation using Ford Performance's 347 short block!

Item #M6009347
MPN# M-6009-347

Everyday Low Price: $5,262.99

Low Stock Only 1 available.

This item is not returnable. Details

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This product cannot be sold or shipped to the state of California. More Details

LMR showroom & will call pickup service will be closed beginning Monday 9/21/26 for renovations until further notice. Need help? Contact Us.

Benefits

New Stroked Short Block
Increased HP & Torque
Pre-Assembled w/ New Parts
Ford Performance Quality

Features

347 Cubic Inches
4 Bolt Main
Forged Rotating Assembly
Boss Block

What's in the Box

(1) 347 Short Block

Ford Performance 347 Short Block

Give your ride the perfect foundation of an engine with this Ford Performance 347 cubic inch short block! This short block comes pre-assembled with all brand-new parts! Add your own camshaft, cylinder heads, timing components, etc., and you'll be ready to tear up the streets! Ford Performance starts off with a new Boss 302 engine block and then assembles it with a forged crankshaft, forged I-beam connecting rods, and forged Mahle pistons. This Mustang 347 stroker short block will be sure to kick-start your high-horsepower engine build.

347 Stroker Specs

Engine type: 302 based small block Ford
Displacement (cu in): 347
Bore x stroke (in): 4.030" bore x 3.400" stroke
Block: Boss 4-bolt main block M-6010-BOSS302 8.2" deck height
Piston to Deck Height: .010" below deck (nominal)
Crankshaft: SCAT® Forged Steel: 3.400" stroke
Connecting rods: SCAT® forged steel I-beam connecting rods with floating pin and ARP® bolts
Pistons: Mahle® forged aluminum, 1mm, 1mm, 2.00mm rings, valve reliefs for X306, X307, Z304DA, Z304P, N351, and other inline valve Windsor cylinder heads. 6.5 cc valve pockets. Check piston to valve clearance.
Hydraulic roller camshaft compatible
Internally balanced. Requires 0oz balance flywheel and damper.
Recommended cylinder head fasteners: M-6065-BOSS head bolts or M-6014-BOSS studs, depending on application.
This short block is compatible with most aftermarket performance cylinder heads. Ford Racing short blocks are built with pistons designed for 20-degree valve angle heads and will fit stock or most spread valve guide centerlines.
Works well with Ford Performance cylinder heads M-6049-Z2 and M-6049-X2
Designed for M-6049-X306//X307/Z304DA/Z304P and N351 cylinder heads. Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads
Assembled and ready for your heads, cam, and timing chain set. (Cam bearings come pre-installed)
Requires head gaskets M-6051-CP331 or S331
High-performance harmonic balancer M-6316-D302 is recommended.
High volume oil pump M-6600-D2 recommended.
302 bolt pattern, oil pan, and timing cover.
Built with all NEW PARTS.

Product Note

Oil pressure bung is a 1/2 NPT on the Boss block. It will require a 1/2 NPT to a 1/4 NPT adapter to work with the factory extension and pressure sensor.
Neutral balanced rotating assembly - requires 'zero' balance flywheel or flex plate

This product is intended for off-road use only. Off-Road Disclaimer

Ford Performance Racing Parts "Packs" and Component Parts Limited Warranty - Click Here
Ford Performance Racing Parts - NO WARRANTY - Click Here
Ford Performance Racing Parts Crate Engine Limited Warranty - Click Here

Ford Mustang - 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995

FItment Notice

Not compatible with 5.0 Resto Timing Cover Stud and Bolt Kit - LRS-6019AHDW & 5.0 Resto Water Pump Bolts & Studs for Timing Cover - LRS-8501BHDW

California Residents:

WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

Ship Weight: 311 lbs

About This Brand

Ford Performance - Mustang Ford Racing Parts
Ford Performance Parts is the leader in performance parts and accessories for Mustang and Ford Lightning.

LMR.com is proud to offer Ford Racing Performance Parts for your project. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. Choose from suspension, exhaust, wheels, and other performance parts at Late Model Restoration. If you want the best for your Mustang or SVT Lightning, look no further than Ford Performance Parts!