MANLEY 11621-8 Race Series Valves Exhaust Set of 8

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MANLEY

MANLEY 11621-8 Race Series Valves Exhaust Set of 8

Part Number: 11621-8
Manufacturer: MANLEY
Description : Race Series Valves Exhaust Set of 8 Specs

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    Description

    Product Note:

    Race Series Valves Exhaust Set of 8

    Specs:

    Head Diameter: 1.590"
    Installed Height: Stock
    Margin: .070"
    O/A Length: 4.923"
    Seat Width: .115"
    Stem Diameter: .3136"
    Tip Length: .160"
    Top of Head: 18° Dish
    Underhead Angle/Radius: 25° x 7/16"
    Weight: 92g

    Manley Performance has been manufacturing the finest stainless steel valves for over 40 years. Manley valves have been the standard of the industry since their inception; a fact that still remains true today as we’ve entered into new markets.

    Manley Performance Chevy LS, Ford Modular, and Chrysler SB HEMI stainless steel valves utilize our exceptional “Race Series” alloy and are manufactured to the highest quality standards.

    Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.

    Manley intake valves typically are built with our original “Pro-Flo” design which reduces the stem diameter in the fillet area for increased airflow but also less valve weight. This concept is executed on our Chevy LS and Chrysler HEMI parts.

    In certain specific applications, Manley offers our “Extreme Duty” exhaust material. Our “Extremealloy” alloy offers more hot hardness and high temperature strength than our competitors’ offerings. This alloy is ideal for extremely high boosted applications where the exhaust gas temperatures reach what seem like unthinkable levels. In the case of the Ford Modular 4.6L and 5.4L 3 valve cylinder head engine, we chose to use Extremealloy.

    Manley stainless valves are suitable for all applications ranging from the mild street performer to the jaw dropping 1000+ horsepower race cars competing at the drag strip.

    Manley has been at the forefront with these niche markets; developing better flowing and stronger aftermarket valves for the Chevy LS and Ford Modular market before our competition. We were the first to offer L-92 valves and our hollow LS valves are the very best in the industry.

    Select Vehicle Above to Narrow Fitment Info!

    Year Make Model Trim Engine Vehicle Fit Notes

    Cadillac

     

    Escalade

     

    BASE

     
    6.2L V8 Gas OHV
     
    Cadillac
    Escalade
    BASE

    6.2L V8 Gas OHV
    Sport Utility 4-Door
     

    Cadillac

     

    Escalade

     

    PLATINUM

     
    6.2L V8 Gas OHV
     
    Cadillac
    Escalade
    PLATINUM

    6.2L V8 Gas OHV
    Sport Utility 4-Door
     

    Cadillac

     

    Escalade ESV

     

    BASE

     
    6.2L V8 Gas OHV
     
    Cadillac
    Escalade ESV
    BASE

    6.2L V8 Gas OHV
    Sport Utility 4-Door
     

    Cadillac

     

    Escalade ESV

     

    PLATINUM

     
    6.2L V8 Gas OHV
     
    Cadillac
    Escalade ESV
    PLATINUM

    6.2L V8 Gas OHV
    Sport Utility 4-Door
     

    Cadillac

     

    Escalade EXT

     

    BASE

     
    6.2L V8 Gas OHV
     
    Cadillac
    Escalade EXT
    BASE

    6.2L V8 Gas OHV
    Crew Cab Pickup 4-Door
     

    GMC

     

    Sierra

     

    BASE

     
    5.3L V8 Gas OHV
     
    GMC
    Sierra
    BASE

    5.3L V8 Gas OHV
    Crew Cab Pickup 4-Door
     

    GMC

     

    Sierra

     

    DENALI

     
    6.2L V8 Gas OHV
     
    GMC
    Sierra
    DENALI

    6.2L V8 Gas OHV
    Crew Cab Pickup 4-Door
     

    GMC

     

    Yukon XL 1500

     

    DENALI

     
    6.2L V8 Gas OHV
     
    GMC
    Yukon XL 1500
    DENALI

    6.2L V8 Gas OHV
    Sport Utility 4-Door
     

    GMC

     

    Yukon XL 1500

     

    SLE

     
    5.3L V8 Flex OHV,
    5.3L V8 Gas OHV,
    6.0L V8 Gas OHV
     
    GMC
    Yukon XL 1500
    SLE

    5.3L V8 Flex OHV,
    5.3L V8 Gas OHV,
    6.0L V8 Gas OHV
    Sport Utility 4-Door
     

    GMC

     

    Yukon XL 1500

     

    SLT

     
    5.3L V8 Flex OHV,
    5.3L V8 Gas OHV,
    6.0L V8 Gas OHV
     
    GMC
    Yukon XL 1500
    SLT

    5.3L V8 Flex OHV,
    5.3L V8 Gas OHV,
    6.0L V8 Gas OHV
    Sport Utility 4-Door
     

    Hummer

     

    H2

     

    ADVENTURE

     
    6.2L V8 Gas OHV
     
    Hummer
    H2
    ADVENTURE

    6.2L V8 Gas OHV
    Crew Cab Pickup 4-Door
     

    Hummer

     

    H2

     

    BASE

     
    6.2L V8 Gas OHV
     
    Hummer
    H2
    BASE

    6.2L V8 Gas OHV
    Crew Cab Pickup 4-Door
     

    Hummer

     

    H2

     

    BASE

     
    6.2L V8 Gas OHV
     
    Hummer
    H2
    BASE

    6.2L V8 Gas OHV
    Sport Utility 4-Door
     

    Hummer

     

    H2

     

    LUXURY

     
    6.2L V8 Gas OHV
     
    Hummer
    H2
    LUXURY

    6.2L V8 Gas OHV
    Sport Utility 4-Door