Manley Race Flo Valve
Race Flo valves are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at the bracket, drag and oval track racers operating below 8000 rpm. Any engine builder successfully using EV-8 alloy (21-4N) valves will find in this series of Manley valves a superior piece at a most attractive price.
Part Type: Exhaust Valves
Style: Manley Race Flo Valves
Application: Chevrolet Big Block V8
Head Diameter: 1.725"
Stem Diameter: 3/8" (.3715")
Installed Height: Standard
Overall Length: 5.350"
Material: XH-426 Stainless Exhaust Material
1-Piece Design: Yes
Hard Chrome Stems: Yes
Undercut Stem: Yes
Black Nitrided: No
Swirl Polished: Yes
Lock Groove Type: Conventional
Lock Groove Quantity: Single
Tip Length: .220"
Under Head Angle: 10 Degrees
Under Head Radius: .375"
Margin: .060"
Seat Width: .100"
Top of Head: 5 Degree Dish
Weight: 120 grams
Manufacturer: Manley Performance
Manufacturer's Part Number: 11517-1
Weight: 0.30 lbs.
Warranty: Race Application, No warranty expressed or implied.
Quantity: Sold as Each | 
