• 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
• TSP .660" Dual Spring Kit w/ PAC Springs, Retainers, Seats, & Seals
  Springs, Titanium Retainers, Seats, & Seals
• CHE Bronze Guides
• 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, we recommend 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

	LS7  Intake	LS7 Exhaust	PRC 265cc  LS7 Intake	PRC LS7 Exhaust
.200	161	114	169	119
.300	227	171	248	179
.400	291	193	308	211
.500	330	203	351	224
.600	351	209	383	235
.650	353	204	388	241
.700	353	209	393	246