The Victor Jr.
LS3 cylinder heads by Edelbrock are ideal for high performance street and competition engines that have reached their limit with a stock-style cylinder head design.
Most LS3 aftermarket cylinder heads available today are simply stock head designs with larger ports.
Our LS3 Victor Jr.
cylinder heads are a completely new design that incorporates subtle changes for improved flow and combustion.
These changes were made to address the limitations encountered in stock cylinder heads when increasing engine performance levels.
Changes include a 2.20 diameter intake valve with a canted configuration similar to what is utilized in the GM LT1 Gen V engine.
The unique port shape along with the intake valve change produce almost 400cfm peak flow.
These cylinder heads also feature fully CNCd intake ports, combustion chambers, and exhaust ports for consistency and improved performance.
All of these changes make these cylinder heads capable of producing 600+ hp on an LS3 engine with stock rocker arms, intake manifold, and exhaust manifolds.
Installation Note: #61339: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O.
