The "LSD" LS3 Cylinder Head is THE logical choice for the enthusiast who is looking to step outside of the bounds of a factory LS casting.
 
Featuring industry leading manufacturing technologies, this head presents a no hold's barred approach to aftermarket LS performance. With fully 5-axis CNC'd Intake and Exhaust Ports, as well as a fully CNC profiled combustion chamber - these cylinder heads are produced in a manner that is as precise and effective as a Xerox printer can print paper.
 
These cylinder heads offer no shortage of quality components. This cylinder head package utilizes heavy duty stainless valves, a tried and true valve spring kit, bronze guides, and high-temp silicon o-rings standard.
 
Designed for high horsepower applications, the .750" thick head deck easily supports both naturally aspirated and boosted engines. Featuring a 6-bolt design, these are compatible with the GM LSX block, as well as aftermarket iron, aluminum, and race engine blocks. The 11 degree valve angle drastically improves flow characteristics, meaning, "mo powa, baby!". Manganese Bronze valve guides are installed to withstand wear, aiding in valve seal through the duration the cylinder head is in service. 
 
Our committment to delivering "Performance, Precision, and Unparalleled Perfection" is evident with our no holds barred approach to treating your cylinder heads as if they were our own! We approach each set of cylinder heads with the utmost emphasis on attention to detail. We take immense pride in our work, and our manufacturing processes are always improving to ensure you recieve the absolute best bang for your buck!
 
Here is what you can expect from the PDD Process:
 
PDD's Premier CNC Porting Program
Pressure Tested for Zero Leakages
Performance Valve Job
Head Deck Finishing for Proper Sealing Surfaces
Washed & Hand Deburring on all edges
Final QC checks to ensure 100% Process Control & Capability