Edelbrock Cylinder Head Victor Jr LS3 GM Gen III/IV (4-Bolt Flange) Standard Block Complete

What you get here is a pair of Edelbrock Victor Jr. LS3 cylinder heads, part number 61339. These aren't just modified stock heads; they're an entirely new design built from the ground up for serious performance. If your LS3 engine is pushing the limits of what a factory head can handle, these are designed to take you further, whether you're on the street or at the track.

Edelbrock put some advanced thinking into these heads. They feature a 2.20-inch intake valve that's canted, similar to what you see on newer GM engines, which helps improve airflow. Combined with a unique port shape, these heads can achieve nearly 400 cfm of peak flow. The intake ports, combustion chambers, and exhaust ports are all fully CNC machined for incredible consistency and better performance from cylinder to cylinder. With these heads, you can expect to see over 600 horsepower from an LS3 engine, even when using your stock rocker arms, intake manifold, and exhaust manifolds.

These complete cylinder heads are a solid option for anyone looking to significantly boost their LS3's power output. They are built for high-performance street use and competition engines that demand more than a stock cylinder head can offer. Remember to consult your engine builder or refer to Edelbrock's installation guidelines for the best results when fitting these to your build.