Lingenfelter CNC Ported LS3 L92 Cylinder Heads - Pair

Priced Porting Customer Supplied Cores

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    Quantity in Basket: none
    Part Number: L92CNC-PAIR
    List Price: $1,216.67

    Your Price: $1,095.00

    Quantity in stock: 0
    Estimated shipping date: 5-7 Days
    Free Shipping:W/$500.00+ Order
    Shipping Weight: 50.00 pounds

    Valve upgrades:
    Existing stock valves from core heads $0.00
    LS3 hollow stem intake valves $199.00
    Inconel exhaust valves $189.95
    LS3 hollow stem intake valves & Inconnel exhaust valves $388.95

    Spring and retainer upgrades:

    Year, Vehicle, Engine, Chamber size, Compression, Piston Dish:
    Lingenfelter offers a CNC ported version of the L92/LS3 aluminum cylinder head used on 2008 production 6.2L based Chevrolet Corvettes and various 2007-2008 L92 L76 6.2L and 6.0L based GM trucks.

    The port and chambers are carefully designed to provide the best combination of high flow capabilities. This combination provides excellent horsepower gains. Lingenfelter L92/LS3 cylinder heads are precision CNC machined on our in house 5 axis CNC machine to insure that tight tolerances are maintained. The Lingenfelter CNC porting procedure is a computer controlled machining operation that duplicates details from a finished Lingenfelter hand ported cylinder head. Hand porting is a very labor intensive and time-consuming procedure that takes years to perfect.

    By CNC porting the cylinder heads the high cost of hand porting is reduced, plus the CNC porting is more consistent and will produce better results. Each CNC ported cylinder head will have the same port and chamber configuration as the original master used to develop the CNC program. Following porting each head receives: Precision 3 angle valve job to maximize flow & provide extended life, CC checking chamber size for correct compression, surfacing to insure deck flatness, deburring, pressure testing, professional assembly, setting spring height & checking all tolerances, and serial number.

    Intake runner volume - LPE CNC: 275cc - Stock GM: 261cc
    Exhaust runner volume - LPE CNC: 93cc - Stock GM: 89cc

    Base price package includes porting your supplied cylinder heads
    Stock 2.165 intake valves
    Stock 1.59 exhaust valves
    Stock retainers, locks, and valve seals
    Minimum of 4 bore size recommended flow numbers are measured on 4.125 bore

    LPE CNC L92 LS3 Flow Specs
    Intake valve lift / Exhaust valve lift
    .200 - 158 cfm / .200 - 116 cfm
    .300 - 230 cfm / .300 - 161 cfm
    .400 - 282 cfm / .400 - 201 cfm
    .450 - 302 cfm / .450 - 213 cfm
    .500 - 322 cfm / .500 - 220 cfm
    .550 - 340 cfm / .550 - 226 cfm
    .600 - 350 cfm / .600 - 231 cfm
    .650 - 358 cfm / .650 - 234 cfm
    .700 - 344 cfm / .700 - 237 cfm