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Milodon Megaflow Exhaust Valves Pontiac - 350, 389, 400, 421, 428, 455 (1971-79)

Milodon 45495-8

697-45495-8

made in usa
jegs shipping
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Estimated to ship on 10/05/18
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Milodon Megaflow Exhaust Valves Pontiac - 350, 389, 400, 421, 428, 455 (1971-79) $140.95
Megaflow Exhaust Valves
  • Pontiac - 350, 389, 400, 421, 428, 455 (1971-79)
  • Head Diameter: 1.66''
  • Length: 4.900''
  • 8/pkg

  • Milodon 45495-8 Details

    Pontiac - 350, 389, 400, 421, 428, 455

    Specs:
  • Type: Exhaust
  • Head Diameter: 1.66''
  • Stem Diameter: .341''
  • Length: 4.900'' (1971-79)
  • Tip Length: .250''
  • Head Angle/Radius: 12° 3/8''R
  • Margin: .080''
  • Seat: .090''
  • Grams: 102.6

  • Specifications:

    Approximate Weight (g)
    110
    Lock Groove Quantity
    1-groove
    Lock Groove Style
    Conventional
    Overall Valve Length (in.)
    4.9
    Overall Valve Length (mm)
    124.46
    Quantity
    Sold as a set of 8
    Swirl-Polished
    Yes
    Undercut Stem
    Yes
    Valve Head Diameter (in.)
    1.66
    Valve Head Diameter (mm)
    42.164
    Valve Head Style
    12 degree dish
    Valve Material
    21-4N stainless steel
    Valve Seat Width (in.)
    0.06
    Valve Stem Diameter (in.)
    0.341
    Valve Stem Diameter (mm)
    8.661
    Valve Tip Length (in.)
    0.25
    Valve Tip Length (mm)
    6.35
    Manufacturer's Part Number:
    45495-8

    Milodon's Megaflow Competition Valves are independently tested to flow better, increase horsepower and extended valve spring life. These valves are much lighter than OEM and most aftermarket valves bringing quicker and higher RPM's. All valves are made of premium quality 21-4N material with one-piece forging. With a 1600°F operating temperature, megaflow valves offer high tensile strength to hold up to high valve train loads. Megaflow valves feature tulipped heads, stellite tips, undercut stems and are swirl polished, all for better flow and weight savings and resistance to wear. Megaflow competition valves are proven second to none for performance and reliability.

    Features:

    • Premium Quality 21-4N Material on All Valves
    • One-Piece Forging
    • 1600ºF Operating Temperature
    • Swirl Polished for Better Flow
    • Tulipped Heads for Weight Savings
    • Undercut Stems for Greatest Flow and Lightness
    • Satellite Tips Hardened to 5S-60 Rc.
    • Holds Up to High Valve Train Loads
    • Quicker and Higher RPM Rev's

    Items You Need
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