Description
Intake Valve; Severe Duty; For Use With Big Block Chevy Engines; 2.250 Inch Head Diameter; 0.3415 Inch Stem Diameter; 0.100 Inch Longer Installed Height; NK-844 Stainless Steel; Set Of 8
The Severe Duty® series of valves is the Manley signature in the performance & racing industry. Exhaust material XH-428 & intake material NK-844 is offered by no competitor in the world. & no pair of materials show such clear dominance over all others. Ultimate tensile strength of XH-428 at 1500 Degree Fahrenheit is nearly double the competitors’ EV-8. At 1000 Degree Fahrenheit the Manley NK-844 displays more than four times the ultimate tensile of the competition’s best intake material.
Engine Compatibility: Chevy V8 396-454 Big Block Engines
Head Diameter (IN): 2-1/4 Inch
Stem Diameter (IN): 0.341 Inch
Installed Height (IN): Stock
Groove Type: Single Groove
Finish: Polished
Color: Silver
Material: Stainless Steel
Quantity: Set Of 8
With Undercut Stem: No
– XH-428 Stainless Exhaust Material
– NK-844 Stainless Intake Material
– Chrome Stems & Hard Tips
– Swirl Polished & Fully Machined
– Limited 90 Day Warranty
