Manley Street Master Valve Springs 1.437in OD 135lb Installed Set of 16
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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
$235.42
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 Street Master valve springs in a double with damper configuration, built for Small Block and Big Block Chevy applications. The outer spring measures 1.437 in. O.D..
Key Features
- Manufactured from specially processed high tensile chrome silicon steel
- Shot peened to MIL spec for maximum fatigue life
- Multi-step heat treating minimizes load loss over a run
- Computer-aided design work targets valve bounce and valvetrain separation
- Tightly controlled open end flatness reduces valve stem side loading
Fitment
- Recommended use: Small Block and Big Block Chevy
Product Details
- Series: Manley Street Master
- Spring Type: Double with damper
- Outer Spring O.D.: 1.437 in.
- Inner Spring I.D.: .720 in.
- Installed Pressure: 135 @ 1.800 lbs.
- Open Pressure: 385 @ 1.200 lbs.
- Spring Rate: 418 lbs./in.
- Coil Bind Height: 1.085 in.
- Weight: 121 grams each
- Quantity: Set of 16
- Manufacturer Part Number: 22407-16
Shipping Height: 3.63
Shipping Length: 15.38
Shipping Width: 3.63