Texas Speed & Performance 199-SSPRCLT1 - LT1 CNC Cylinder Heads

Precision Race Components LT1 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!! • 2.165" Stainless Hollow stem Intake Valve / 1.600" Stainless Exhaust Valve • TSP .660 Spring Kit w/ PAC Valve Springs & 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 in the USA Extensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! Cylinder Head Specs: Intake CC: 312cc Intake Valve: 2.165" Exhaust Valve:1.600" Chamber Size: 58cc