Small Block Chevy Race Master Exhaust Valve - Single by Manley Performance
Race Master and the Pro Flo version, identified as Race Flo valves, are manufactured from XH-426 material. NK-842 is used for exhausts and NK-842 for intakes. This series of valves is intended for bracket, drag, and oval track racers. For engines under 8000 rpm – at higher engine speeds, titanium valves are usually required.
For engine builders using these in normal applications, the EV-8 alloy (21-4N) valves found in this Manley series offer an excellent product at a very attractive price. The ultimate tensile strength charts on this and the following pages demonstrate that Manley Race Series valves are equal to the best that past competitors have had to offer.
Features
- Head Diameter: 1.600 in.
- Stem Diameter: 0.3110 in.
- Installed Height: .100 Longer
- O/A Length: 5.040 in.
- Tip Length: 0.290 in.
- Underhead Angle/Radius: 15° x 1/2°
- Margin: 0.080 in.
- Seat Width: 0.100 in.
- Head Top: 9° Dish
- Increased flow and weight reduction due to thin stem
- XH-432 Extreme Alloy material
- Chrome stems and hardened tips
- Swirl polished and fully machined
Benefits
- No need for lash caps or wear caps
- Recommended exhaust valve for alcohol engines
Please note: These .311 stem valves are available only 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 are sold without warranty due to the nature of their intended use.
Before You Order
〇 About Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
〇 Confirmation of Compatibility
Our entire product database is based on North American specification vehicles (USDM). Please confirm whether or not these products can be installed on Japanese specification vehicles (JDM) before ordering. (If you are unsure if the listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to look it up for you.)
If you order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, manufacturer, and model in the tabs on our top page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. There may be confusing expressions, so please contact us before ordering if you have any questions.
○ Regarding Delivery
Shipping costs are paid at the time of payment. Estimates for shipping costs are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, there may occasionally be a significant discrepancy between the automatically calculated shipping amount and the actual cost. In such cases, we will contact you individually by email.
In principle, all products are shipped internationally from our U.S. warehouse. Unlike domestic Japanese delivery, international shipping takes approximately 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all products are transported by air. They will not be shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
All products we handle are designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection (Shaken) System," and we cannot provide documents such as strength calculation reports for the Japanese inspection system. Therefore, all parts are sold for use on "circuits, private property, and off-road" only, and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents of your order immediately upon arrival. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packaging or the product itself. Please understand that we will only provide returns, refunds, or replacement products if you contact us within 7 days of receipt regarding damaged, defective, or incorrect items. Please note that for products sold through us, warranty support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.