Small Block Chevrolet Race Master Exhaust Valve - Single by Manley Performance

Race Master, and the Pro Flo versions identified as 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 - above which engine speed titanium valves are generally required.

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. The Ultimate Tensile Strength charts on this page and the next, show the Manley Race Series to be equal to the best that the competitors have to offer.

Features

• Head Diameter: 1.600"
• Stem Diameter: .3110"
• Installed Height: .100 Longer
• O/A Length: 5.040"
• Tip Length: .290"
• Underhead Angle/Radius: 15° x 1/2”
• Margin: .080"
• Seat Width: .100"
• Top of Head: 9° Dish
• Thin Stem for Increased Flow and Light Weight
• XH-432 XtremeAlloy Material
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined

Benefits

• No Need for Inserted Tips or Wear Caps
• Recommended Exhaust Valves for Alcohol Engines

Please Note: These .311” stem valves are ONLY available with Bead Loc® keeper grooves. Bead Loc® valve locks are REQUIRED.

Applications

• 2004-2007 Cadillac CTS V
• 2007-2008 Cadillac Escalade Base
• 2007-2008 Cadillac Escalade ESV Base
• 2008 Cadillac Escalade ESV Platinum
• 2007-2008 Cadillac Escalade EXT Base
• 1998-2002 Chevrolet Camaro Z28
• 1997-2008 Chevrolet Corvette Base
• 2001-2004 Chevrolet Corvette Z06
• 2005-2006 Chevrolet SSR Base
• 2006-2008 Chevrolet Trailblazer SS
• 2007-2008 GMC Yukon Denali
• 2007-2008 GMC Yukon XL 1500 Denali
• 2008 Hummer H2 Base
• 1998-2002 Pontiac Firebird Formula
• 2004-2006 Pontiac GTO Base

What's In The Box?

• 1 - Valve

Warranty

• Manley products, due to their intended use, are sold without warranty.