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.

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