Roush 347IR Crate Engine (BD347IRC) – High-Performance Small-Block Power for Street & Track!

Upgrade your ride with the Roush 347IR Crate Engine!

The Roush 347IR Crate Engine (BD347IRC) is a naturally aspirated small-block powerhouse, delivering exceptional throttle response, impressive torque, and high-RPM stability. Designed for performance street driving and occasional track use, this engine is precision-engineered with race-proven components to maximize durability and power output.

A high-revving small-block designed to push performance to the next level!

⚠️ Requires aftermarket fuel system, ignition, and tuning for peak performance.

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What’s Included in the Roush 347IR Crate Engine?

✅ High-Performance Engine Block & Heads – Engineered for maximum strength and reliability
✅ Internally Balanced Rotating Assembly – Provides smooth, high-RPM operation
✅ Race-Optimized Cylinder Heads – Enhances airflow, combustion, and efficiency
✅ Custom-Tuned Induction System – Delivers instant throttle response and strong powerband
✅ Performance Camshaft & Valvetrain – Designed for high lift and duration, maximizing power output

⚠️ EXCLUDES fuel injection system, ignition system, computer, wiring harness, and exhaust components.

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Technical Specifications

Engineered for maximum torque, high-RPM performance, and durability!

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Fitment & Compatibility

✔ Perfect for classic muscle cars, street machines, and custom pro-touring builds
✔ Designed for seamless integration with aftermarket fuel injection or carburetor setups
✔ Ideal for lightweight performance cars and classic high-revving V8 builds

Ensure your vehicle’s fuel and ignition system can handle the power of this high-performance crate engine!

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Installation Notes & Recommendations

Professional Installation Recommended – Ensures correct fitment, tuning, and performance
⚙️ Requires Aftermarket Fuel System & Ignition – Not included with the crate engine
Designed for High-Octane Performance Fuel – Requires premium or race fuel for optimal results

⚠️ Not emissions-certified—intended for off-road or racing applications.

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❓ Frequently Asked Questions (FAQ)

What is the horsepower and torque output of this engine?

• The Roush 347IR Crate Engine is built for high-performance applications, with output varying based on fuel setup, tuning, and supporting modifications. Contact Roush for dyno specifications.

Does this engine come with an ECU and wiring harness?

• No, this engine requires a standalone ECU and custom tuning for optimal performance.

Can I install this engine in a street car?

• Yes! While primarily designed for high-performance builds, this engine can be used in street applications with proper emissions and tuning modifications.

What fuel does this engine require?

• Premium 91+ octane fuel or racing fuel is recommended for maximum performance and engine longevity.

Does it include forced induction?

• No, but it is compatible with aftermarket superchargers or turbocharger setups.

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Order Your Roush 347IR Crate Engine Today!

Take your build to the next level with the high-performance Roush 347IR Crate Engine!

✔ High-Revving 347 C.I.D Small-Block for Maximum Power
✔ Built for Performance Street & Track Applications
✔ Dyno-Tested & Proven for Peak Horsepower and Torque
✔ Designed for Custom Builds, Drag Racing, and Pro-Touring Applications

ORDER NOW & EXPERIENCE UNMATCHED PERFORMANCE!