CYLINDER HEAD KIT PERFORMANCE LS1 53 CON 15-121231-K01

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    SKU:
    15-121231-K01
    This item is currently out of stock, but can still be ordered. We will contact you with an estimated delivery date once we receive your order.
    $1,087.23
    Upgrade Options:
    $1,087.23

    Description

    Pair of Aluminum LS1 Cylinder Heads

    Use on LS1 And LS3 Engines

    Includes:

    • 2.02" Stainless Intake Valves 4.920" length
    • 1.57" Stainless Exhaust Valves 4.880" length
    • 16 Conical Valve Springs (1.289" OD .550" Lift Max 105 lbs @1.80" and 260lbs @1.20" -1.140 coil bind) with spring cups
    • 32 Hardened Keepers
    • 16 Quality Valve Stem Seals
    • Intake Runner 212, Exhaust Runner 76
    • Cathedral Port Intake Shape
    • 57 cc Chamber Volume
    • Angle Plug 

     

     New Performance Cylinder Heads, Individually cast using the latest techniques. All machined surfaces are performed by CNC, including bolt holes, to achieve extreme accuracy in finishing.  OEM bolt patterns are used for compatibility. 

    Additional Features:

     

    • Meets and exceeds OEM Specifications
    • Custom Designed Heads
    • Chambers designed for improved flow
    • Heat Treated T6 Aluminum