Head Diameter: 1.625", Stem Diameter: 0.3125", Tip Length: 4.925", Bottom Angle/Radius: 9.8" x 0.5", Seat Width: 0.3", Top Height head: 20 units installed Weight of TBAMANLEY performance has been manufacturing the finest stainless steel valves for over 40 years.
Since their inception, Manley valves have been at the forefront of the industry, a fact that remains true today as we enter new markets.
Manley Performance Chevy LS, Ford Modular, and Chrysler SB HEMI Stainless Steel Valve utilize our exceptional Race Series alloy and are manufactured to the highest quality standards.
Designed for flow, Manley valves perform in the most severe environments.
Manley stainless steel valve features durable chrome stems, polished sweats, fully hardened tips, fully machined combustion faces, closely controlled margin heights, and exact stem to seal concentricity to produce a finished product that is not surpassed.
Typically constructed with our original Pro-Flo design, Manley intake valves reduce the stem diameter in the airless flow zone.
This concept is executed on our Chevy LS and Chrysler HEMI parts.
In specific applications, Manley offers our ExtremeDuth exhaust material.
Our Extremealloy alloy provides more temperature resistance than our competitors, ideal for extremely high applications where exhaust gas temperatures reach levels that seem unthinkable.
For the Ford Modular 4.6L and 5.4L valve cylinder head engine, we have chosen to use Extremealloy.
Manley stainless steel valves are suitable for all applications, from smooth street performance to 1000+ horse racing cars competing in the drag strip.
Manley has been at the forefront with these better flowing and stronger post-competition markets.
