Precision Race Components Aftermarket LT1 CNC Cylinder Heads

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Part Number: 199-SSPRCLT1

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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 FLOW NUMBERS Lift Intake Exhaust .2 151 117 .3 223 154 .4 265 200 .5 310 216 .6 349 229 .65 365 232 .7 370 235