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Manley Race Master Race Flo Intake Valves Small Block Chevy

Manley 11568-8
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660-11568-8

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Manley Race Master Race Flo Intake Valves Small Block Chevy $151.99
Race Master Race Flo Intake Valves
  • Small Block Chevy
  • 2.055'' Diameter
  • 11/32'' (0.3415'') Stem Diameter
  • 4.911'' Overall Length (Stock)
  • Stainless Steel
  • 8/pkg.

  • Manley 11568-8 Details

    Intake Valves

  • Type: Intake Valve NK-842 Material
  • Head Diameter: 2.055''
  • Stem Diameter: 11/32'' / 0.3415''
  • Installed Height: Stock
  • Overall Length: 4.911''
  • Tip Length: 0.250''
  • Underhead Angle / Radius: Pro Flo 12° x 3/8''
  • Margin: 0.050''
  • Seat Width: 0.080''
  • Top of Head: 5° Dish
  • Weight / Grams: 115

  • Specifications:

    Manufacturer's Part Number:
    11568-8

    Pro Flo Undercut Valve Stem Design

    Manley Performance is indisputably a leading manufacturer of performance and racing components in the world. The reason for Manley's overwhelming success is simple: Quality. Manley offers the best materials in the industry - exclusive materials that other manufacturers do not possess. Manley's valve stems are hard coated with .0002'' thick chrome rather than a few millionths of flash. Manley's hard valve tips are superior to competitors' puddled ''stellite'' which can crack and erode off the stem. Manley's valve head and under head shapes have been in the forefront of the quest for improved flow since the late 1960's.

    Race Master and the Pro Flo versions identified as Race Flo valves, are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at the bracket, drag and oval track racers operating below 8000 rpm - above which engine speed titanium valves are generally required. Any engine builder successfully using EV-8 alloy (21-4N) valves will find in this series of Manley valves a superior piece at a most attractive price. The Ultimate Tensile Strength charts on this page and the next, show the Manley Race Series to be equal to the best that the competitors have to offer.

    Features:
  • Superior Stainless Steel (XH-426 Exhaust and NK-842 Intake)
  • Offers Better Fatigue Strength than competitors' offerings
  • Chrome Stems and Hard Tips
  • Race Master (Straight Stem) and Race Master Race Flo (Pro Flo Undercut Stem) Shapes Available
  • Swirl Polished and Fully Machined
  • Recommended Exhaust Valves for Alcohol Engines


  • Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.