Precision Race Components Aftermarket LT4 CNC Cylinder Heads

Precision Race Components LT4 CNC 312cc ported cylinder heads. All new 6-bolt Precision Race Components LT cylinder heads! MADE in the USA!! CAST in the USA!! MACHINED in the USA!! Now available For LT1 or LT4 Builds! 2.165" Titanium Intake Valves 1.600" Hollow Stem Stainless Steel Exhaust Valves PRC Dual Spring Kits featuring PAC .660" or .750" lift springs are available. Includes new seats, seals and titanium retainers. 6-Bolt Cylinder Heads with Thicker Deck Surface CHE Bronze Guides Will Work on Both Standard GM 4-Bolt & Aftermarket LT 6-Bolt Style Engine Blocks Completely Assembled & Setup To Your Specs Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! The PRC LT cylinder heads are available with hollow-stem or titanium intake valves. The hollow-stem intake valves shed significant intake valve weight and allow for additional lift. The titanium intake valves will be the lightest choice however and offer the best durability possible! Cylinder Head Specs: Intake CC: 312cc Intake Valve: 2.165" Exhaust Valve:1.600" Chamber Size: 62.5cc