Aluminum Cylinder Head Bare Head 64cc for GM Chevy LS1 LS2 LS6 4.8L 5.3L 5.7L

Increasing your engine's efficiency is a major way to improve performance and horsepower; the addition of performance-oriented aftermarket heads can greatly improve your engine's output by enhancing airflow and combustion efficiency.   No manual, professional installation is recommended! Specifics and Features: This cylinder head does not have many stem holes. May require drilling if necessaryValves, Springs, Retainers, Hardware not IncludedCombustion Chamber Volume: 64ccIntake Runner Volume: 210ccExhaust Runner Volume: 82ccIntake Valve Diameter: 2.020"Exhaust Valve Diameter: 1.600"Valve Stem Diameter: 0.316"   Includes: 1 X Cylinder Head Item Specifics Brand : Deepmotor Manufacturer Part Number : DM-CYLS1005 Material : Aluminum Fitment Type : Direct Replacement