| Manley 10726-1 Ford 4.6-5.4L DOHC 3V Intake SS Race Master Valve 2.250 Head Dia. x .3715 Stem Dia. Stock Installed Height
Head Dia.: 2.250
Stem Dia.: .3715
Installed Height: Stock
Tip Length: .220
Underhead Angle/Radius: Pro Flo: 10° x 3/8"
Seat Width: .080
Top of Head: 5° Dish
Gram Wt: 138
XH-424 Stainless Exhaust Material
NK-841 Stainless Intake Material
Chrome Stems and Hard Tips
Swirl Polished and Fully Machined
Improved Flow with “Pro Flo” Underhead
Race Master, and the Pro Flo versions identifiedas Race Flo valves, are manufactured of XH-426 materialfor the exhausts and NK-842 for the intakes. This series ofvalves is targeted at the bracket, drag and oval track racersoperating below 8000 rpm - above which engine speedtitanium is required. Any engine builder successfully usingEV-8 alloy ( 21-4N ) valves will find in this series of Manleyvalves a superior piece at a most attractive price. TheUltimate Tensile Strength charts on this page and the next,show the Manley Race Series to be equal to the best thecompetitors have to offer.
Manley Performance is universally acknowledgedas the leading manufacturer of performance andracing valves in the world.
The reason for Manley’s overwhelming successis simple: QUALITY. We offer the best materials in theindustry - exclusive materials our competitors do not possess.Our stems are hard coated with .0002" thick chromerather than a few millionths of flash. Our hard tips aresuperior to competitors’ puddled stellite which can crackand erode off the stem. Our valve head and underheadshapes have been in the forefront of the quest forimproved flow since the late 1960’s. And always eachManley valve has been price targeted to specific marketsto ensure the best possible value to the customer.
1 Each Individual Valve