My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Manley 11633-8 Stainless Steel Performance Valve

(2005-2008 Ford F-150; 2005-2008 Ford Mustang; 2005-2008 Ford F-250 Super Duty; 2005-2008 Ford F-350 Super Duty; 2018-2023 Infiniti Q50)

Part of: Manley Stainless Steel Performance Valves

Other options in this family: Manley 11639-8 Manley 12346-8 Manley 11638-8

Manufacturer

Picture for manufacturer Manley

Part Number

11633-8
7 reviews
Sale Price

$514.08

In Stock (6)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 11633-8 is a premium stainless steel performance valve engineered for high-performance engine applications. Manufactured using Manley's exceptional Race Series alloy, this valve delivers superior flow characteristics and exceptional durability even in the most demanding environments.

Specifications:

  • Head Diameter: 38.5mm
  • Stem Diameter: 0.2345"
  • Overall Length: 4.585"
  • Tip Length: 0.380"
  • Underhead Angle/Radius: 25° x 11/32"
  • Margin: 0.080"
  • Seat Width: 0.100"
  • Top of Head: 20° Dish
  • Installed Height: Stock
  • Weight: 70 grams

Premium Construction Features:

  • Chrome-finished stems for enhanced durability and reduced friction
  • Swirl polished under heads for optimal flow dynamics
  • Fully hardened tips for extended service life
  • Completely machined combustion faces for precise sealing
  • Closely controlled margin heights for consistent performance
  • Exact stem-to-seat concentricity for superior valve sealing

Manley's Race Series stainless steel valves are designed to outflow and outperform competitive offerings across all applications, from street performance builds to extreme race engines producing over 1000 horsepower. Each valve is manufactured to exacting quality standards backed by over 40 years of valve manufacturing expertise.

Products specifications

Fits

2005-2008 Ford F-150; 2005-2008 Ford Mustang; 2005-2008 Ford F-250 Super Duty; 2005-2008 Ford F-350 Super Duty; 2018-2023 Infiniti Q50

Great seller, price, and shipping was fast. I will do business with again.

very prompt service,items were in stock and shipped next day,salesman was helpful and friendly.Will place in favorites and do buisness with again.

Great product. Fast shipping. Great seller. Thanks again.

Shopping was quick and fast now just waiting on order Got order and can't wait to install

Received the product I ordered promptly, with no hassles. Happy with this transaction.

By far the lowest price i've seen on the web for what i have been trying to get, the Injen SRI for my juke. Great price fast shipping! Ill buy all my car stuff here from now on.

Ordered a VP Racing fuel container and fill tube late Friday and it's already on the way. <br>Best price online and very quick service. Great transaction will definitely order from vendor again. <br>Thanks Autoplicity.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy