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Part number: 11373-8
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Product Details
Manley 11373-8 Valvetrain
Products specifications
Approximate Weight (g) 68
Head Diameter 28mm
Lock Groove Quantity 1-groove
Lock Groove Style Conventional
Margin .065"
O/A Length 102.7mm
Overall Valve Length (in) 4.043 in.
Overall Valve Length (mm) 102.70mm
Quantity Sold as a set of 8.
Seat Width .080"
Stem Diameter 5.5mm/.2165”
Swirl Polished Yes
Swirl-Polished Yes
Tip Length 2.5mm
Top of Head 20° Dish
Undercut Stem Yes
Underhead Angle/Radius 25° x 11/32"
Valve Head Diameter (in) 1.102 in.
Valve Head Diameter (mm) 28.0mm
Valve Head Style 25 degree dish
Valve Material XH-426 stainless steel
Valve Seat Width (in) 0.080 in.
Valve Stem Diameter (in) 0.216 in.
Valve Stem Diameter (mm) 5.5mm
Valve Tip Length (in) 0.098 in.
Valve Tip Length (mm) 2.50mm
Race Series Valves
Set of 8

Manley Performance Sport Compact 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.

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.

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 or drifting events.

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