Small Block Chevy LS-1 / LS-2 (LS-6 Head) Race Master Exhaust Valves - Set of 8 by Manley Performance
Race Master, and the Pro Flo version identified as Race Flo valves, are manufactured using XH-426 material for exhaust and NK-842 material for intake. This valve series is intended for bracket, drag, and oval track racers operating at 8000 rpm or less. Generally, engine speeds above 8000 rpm require titanium valves.
Engine builders who successfully use EV-8 alloy (21-4N) valves will find that this series of Manley valves is an excellent product at a very attractive price. The ultimate tensile strength tables on this and the following page demonstrate that the Manley Race series is equal to the best offered by our competitors.
Features
- Head Diameter: 1.550"
- Stem Diameter: 0.3136"
- Installed Height: Stock
- O/A Length: 4.923"
- Tip Length: 0.175"
- Underhead Angle/Radius: 25° x 7/16"
- Margin: 0.065"
- Seat Width: 0.115"
- Top: 18° Dish
- Swirl Polished and Fully Machined
- XH-426 Stainless Steel
- Chrome Stems and Hard Tips
Benefits
- Recommended exhaust valve for alcohol engines
- Suitable for drag track and oval track racers operating under 8,000 rpm
Please note: The images provided are generic and may not be an exact representation of the product you will receive
Applications
- 2004–2005 Cadillac CTS V
- 1998–2002 Chevrolet Camaro Z28
- 1997–2004 Chevrolet Corvette Base
- 2001–2004 Chevrolet Corvette Z06
- 1998–2002 Pontiac Firebird Formula
- 2004 Pontiac GTO Base
What's in the box?
- 8 - Valves
Warranty
- Manley products are sold without warranty due to their intended use.
Before Ordering
〇 Regarding Import Consumption Tax
At Shaft-ya Shopping Site, we cover the import consumption tax incurred at the time of import on your behalf, so there are no additional charges beyond the total amount paid at checkout.
〇 Confirmation of Compatibility
All product databases are based on North American vehicles (USDM). Please confirm compatibility with Japanese vehicles (JDM) before ordering. (If you are unsure if a listed product will fit your vehicle, please feel free to contact us. Our support team will check for you.)
If you order without verifying compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by selecting the year, manufacturer, and vehicle 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. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Delivery
Shipping costs are paid at the time of payment. Shipping estimates 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 cost and the actual cost. In such cases, we will contact you individually via email.
Basically, all products are shipped internationally from our US warehouse. Unlike domestic delivery within Japan, international delivery takes about 7 to 14 days, so please allow plenty of time for your order. If you are in a hurry, please contact us in advance to confirm the delivery date. Note that all products are transported by air; they are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Essentially, all products we handle are designed and manufactured outside of Japan. Please be aware that they are not compliant with "Japanese vehicle inspection standards," and we cannot provide strength calculation documents or similar paperwork for these inspections. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. As all products are shipped internationally from outside Japan, there may be delivery damage to the packaging or the product. Please understand that we will only provide returns, refunds, or replacement products if you contact us within 7 days of receipt regarding products with delivery damage, defective items, or items different from what was ordered. Furthermore, for products sold through us, warranty support will be handled "exclusively through us." Please note that we do not provide support through other companies or distributors located in Japan.