347 Cobra Forged Windsor Stroker Short Block

The Reid's Speed Shop 347 Cobra is designed for those looking to take their 302-based Small Block Ford performance to the next level. Combining increased displacement with a heavy-duty aftermarket engine block and fully forged rotating assembly, the Cobra provides a strong, dependable foundation for serious street performance and high-horsepower applications.

At its foundation is a Dart SHP 302-based engine block featuring splayed four-bolt main caps and a priority main oiling system. A 4340 forged steel stroker crankshaft, forged 5140 connecting rods, and DSS forged pistons provide the strength and durability needed for a properly matched performance combination.

Every short block receives professional machine work, careful component preparation, precision measurements, and final assembly. Each engine block is also painted in your choice of color.

Standard Forged Short Block

Starting at $5,899

• Dart SHP Heavy-Duty 302-Based Aftermarket Block

• Splayed Four-Bolt Main Caps

• Priority Main Oiling System

• 4340 Forged Steel Stroker Crankshaft

• Forged 5140 5.400" I-Beam Connecting Rods

• ARP 8740 Connecting Rod Hardware

• DSS Forged 4.030" Pistons

• Premium Tri-Metal Main and Rod Bearings

• Installed Coated Camshaft Bearings

• Brass Expansion Plugs

• Professional Machine Work and Block Preparation

• Precision Measurements and Assembly

• Engine Block Painted in Your Choice of Color

Available Package Upgrades

Hydraulic Roller Camshaft Package

+$1,400

Includes everything in the Standard Forged Short Block, plus:

• Custom-Selected Hydraulic Roller Camshaft (Stage 1, 2, or 3)

• Ford Performance Hydraulic Roller Lifters

• New Hydraulic Roller Lifter Retainer Kit

• 9-Way Adjustable Billet Double Roller Timing Set with Torrington Bearing

• New Camshaft Retainer Plate

• Two-Piece Fuel Pump Eccentric

• ARP Camshaft Hardware

Camshaft selection is tailored to your intended application and performance goals. Whether you're looking for responsive street manners, an aggressive muscle car character, or a more performance-oriented combination, we'll select a camshaft that complements your build.

Hydraulic Roller Camshaft + Sealed Short Block Package

+$2,100 over the Standard Short Block for Front Sump

+$2,250 over the Standard Short Block for Rear Sump

Includes everything in the Hydraulic Roller Camshaft Package, plus:

• Melling Engine Oil Pump

• ARP Hardened Oil Pump Driveshaft

• Properly Matched Oil Pump Pickup

• ARP Oil Pump Mounting Hardware

• Stroker-Clearanced Oil Pan (Front or Rear Sump)

• One-Piece Oil Pan Gasket

• ARP Oil Pan Hardware

• Silver Seal Timing Cover

• Timing Cover Gasket and Front Crankshaft Seal

This configuration provides a more complete, professionally assembled and sealed short block, ready for the installation of your selected cylinder heads, valvetrain, induction system, and remaining engine components.

Front- and rear-sump configurations are available to accommodate different vehicle applications.

Built for Your Combination

The 347 Cobra is designed to serve as the foundation for a wide range of Small Block Ford performance applications. Its 302-based architecture makes it particularly attractive for applications where maintaining the compact dimensions of the original Small Block Ford is important.

Whether you're building a responsive street cruiser or a more aggressive weekend machine, our short blocks are assembled with the same attention to detail and component standards found throughout our complete engine builds.

Each package is professionally prepared and assembled by Reid's Speed Shop, with an emphasis on precision, component compatibility, and long-term performance.

Cylinder heads, intake manifold, and other top-end components are not included. Final compression ratio depends on the selected cylinder heads, head gasket specifications, and assembled combination.