stage 4 - Cobra Stroker 331 SBf
347 COBRA STROKER | MORE DISPLACEMENT. SERIOUS STREET PERFORMANCE.
The 347 Cobra Stroker brings together increased displacement, premium forged internals, and carefully selected performance components to deliver an exciting Small Block Ford combination built around power, responsiveness, and versatility.
At its foundation is a professionally prepared OE Ford block equipped with an Eagle 4340 forged steel crankshaft, Eagle forged I-beam connecting rods, and DSS forged flat top pistons. Combined with approximately 10.0:1 compression, AFR aluminum cylinder heads, and a carefully selected hydraulic roller camshaft, the Cobra is designed to deliver impressive horsepower, substantial torque, and a broad, usable powerband.
Camshaft selection and operating RPM range are tailored to your specific performance goals, intended application, and desired driving characteristics.
Every Cobra Stroker receives comprehensive machine work, rotating assembly balancing, and precision assembly with critical measurements, clearances, camshaft timing, and valvetrain geometry carefully verified throughout the process. Extensive ARP performance hardware, a complete roller valvetrain, and premium supporting components remain standard.
Delivered complete from intake to oil pan with a performance ignition system, each engine also receives operating verification on our dedicated test stand before delivery.
Whether destined for a classic Mustang, vintage Ford truck, or custom performance application, the 347 Cobra Stroker combines the excitement of a forged stroker engine with the professional workmanship and attention to detail expected from Reid's Speed Shop.
TYPICAL INVESTMENT
347 Cobra Stroker Starting at: $10,500
Pricing reflects a customer supplied engine core. Final specifications and investment may vary based on component selection, engine condition, and application requirements.
Every Package Includes Full Ignition • Engine Cradle • Lift Plate
Operating Range
Camshaft selection and operating RPM range are tailored to your specific performance goals, intended application, and desired driving characteristics.
Estimated power
400-450+ HP
Fuel Requirement
91+ Octane Pump Gas
quick specs
347 Cubic Inch Small Block Ford Stroker
Estimated Performance: 410–465 HP | 400–450 lb-ft Torque
Approximately 10.0:1 Compression Ratio
Professionally Reconditioned OE Ford Block
Comprehensive Machine Work & Fully Balanced Forged Rotating Assembly
Eagle 4340 Forged Steel Crankshaft, 3.400" Stroke
Eagle 5140 Forged I-Beam Connecting Rods, 5.400" Length
DSS Forged Flat Top Performance Pistons
Performance Piston Rings & King Main and Rod Bearings
Dura-Bond Performance Cam Bearings
AFR Performance Aluminum Cylinder Heads
Application Matched Trick Flow Track Max Hydraulic Roller Camshaft
LPC Premium Link Bar Hydraulic Roller Lifters
Stainless Steel 1.6 Ratio Full Roller Rocker Arms
Custom Measured, Hardened One Piece Pushrods
Performance Aluminum Dual Plane Air-Gap Intake Manifold
Billet 9-Way Adjustable Double Roller Timing Set with Torrington Bearing
Melling Performance Oiling System with Hardened ARP Oil Pump Drive Shaft
New Stroker Clearanced 5-Quart Oil Pan, Front Sump Standard
Silver Seal Timing Cover & Two Piece Fuel Pump Eccentric
Adaptable 3 or 4-Bolt Harmonic Balancer with Billet Adjustable Timing Pointer
Extensive ARP Performance Fasteners Throughout
Billet Ready-to-Run Distributor with Melonized Gear
PerTronix Flame-Thrower Coil, Ford Performance Plug Wires & NGK Spark Plugs
Complete Intake-to-Pan Engine with Ignition System Included
Precision Assembly with Verified Critical Clearances
Complete Engine Operating Verification Prior to Delivery
Pricing reflects customer supplied engine cores and the hydraulic roller retrofit configuration. OE hydraulic roller combinations are also available at a slightly lower investment. Front sump oil pan configuration is standard; rear sump applications can be accommodated upon request.
Looking for More Details?
The information above is intended as a quick overview of this engine package. For a complete parts list, camshaft specifications, recommended drivetrain combinations, compatibility questions, or customization options, contact Reid's Speed Shop. We'll gladly walk through the entire build and tailor it to your application.
BUILT AROUND YOUR VISION
Our advertised engine packages serve as carefully developed foundations, not limitations on what your engine can become.
Every combination can be tailored to your specific application, whether you're looking for a dependable street cruiser with smooth, responsive power or an aggressive performance engine built for serious horsepower.
From compression ratio and camshaft selection to cylinder heads, valvetrain components, and overall operating characteristics, each engine is configured around your performance goals, driving preferences, and intended use.
Your engine should be built around what you want to accomplish, not restricted to a predetermined combination.
Our packages provide a starting point. The finished engine is built for you.
Why Choose Reid’s speed Shop?
Purchasing a performance engine is a significant investment, and choosing the right builder is just as important as selecting the right components. At Reid's Speed Shop, every engine receives the individual attention, precision, and craftsmanship expected from a dedicated performance engine building shop.
Each combination is carefully planned around its intended application, with components selected for compatibility, performance, and long-term reliability. Throughout assembly, critical measurements and clearances are verified to ensure every engine meets our standards before completion.
One of the greatest advantages of working with Reid's Speed Shop is direct communication with the person building your engine. Customers are kept informed throughout the process, with progress updates and photographs providing an inside look at their engine as it comes together.
Complete hydraulic roller engine combinations also undergo operating verification on our dedicated engine test stand, allowing us to monitor critical operating conditions and inspect for potential issues before delivery. Customers can see and hear their completed engine running through video updates or in person when arrangements allow.
From initial consultation to final verification, our focus is on delivering a professionally built performance engine and a customer experience that inspires confidence in every step of the process.