Manley Extreme Duty Exhaust Valves Small Block Chevy 1.600in Head 5.065in Length Set of 8
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This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
Regular price
$685.44
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
Manley Extreme Duty exhaust valves for the Small Block Chevy, with a 1.600 in. head diameter, 5.065 in. overall length and a .3415 in. stem. Manley builds the overall length .100 in. longer than stock.
Key Features
- Swirl polished under head area and fully machined combustion face
- 9 degree dish top of head
- Hardened tip for wear resistance
Fitment
- Chevrolet Small Block
Product Details
- Position: Exhaust
- Head Diameter: 1.600 in.
- Overall Length: 5.065 in.
- Stem Diameter: .3415 in.
- Tip Length: .290 in.
- Margin Width: .080 in.
- Seat Width: .100 in.
- Underhead Angle: 15 degrees
- Series: Manley Extreme Duty
- Quantity: Set of 8
- Manufacturer Part Number: 11701-8
Manley lists this valve in different alloys between its current website and its printed catalog. Confirm the material with Manley if the alloy matters for your build.
Shipping Height: 2.5
Shipping Length: 11.75
Shipping Width: 6.75