Precision Race Components LS7 CNC 265cc ported cylinder heads. 

 

• PRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface
• Will Work on Both Standard GM 4-Bolt & Aftermarket LSx / RHS 6-Bolt Style Engine Blocks
• 2.200"/1.610" Valves
• PRC Double Spring Kit Complete With PRC Double
  Springs, Titanium Retainers, Seats, & Seals
• Completely Assembled & Setup To Your Specs
• Available With Stainless Steel, Hollow-Stem, or Titanium Intake Valves

Extensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 35 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow!

 

The PRC LS7 cylinder heads is available with standard stainless valves, hollow-stem intake, and titanium intake valves.  If you are going to run the stainless steel intake valves, PRC recommends limiting total valve lift to no more than .616" due to the weight of the intake valve.  Upgrading to the hollow-stem intake valve will shed significant intake valve weight and allow for additional lift.  The titanium intake valves will be the lightest choice of the three choices and offer the best lift possible!

 

Flow Data:  @ 4.125" Bore Plate  Superflow 600