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Manley 11230-8 Severe Duty Stainless Steel Intake Valve 2.020in Head

Manufacturer

Picture for manufacturer Manley

Part Number

11230-8
5 reviews
Sale Price

$301.07

Estimated ship date Thursday, November 19

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Product Details

The Manley 11230-8 Severe Duty Series Intake Valve is engineered for high-performance and race engine applications demanding superior durability and precise flow characteristics. Manufactured from NK-844 stainless steel with a chrome-plated stem and hardened tip, each valve is swirl polished and fully machined to exacting tolerances.

Key Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.020 in.
  • Stem Diameter: 0.3415 in. (11/32)
  • Overall Length: 5.015 in.
  • Installed Height: 0.100 in. longer than stock
  • Tip Length: 0.250 in.
  • Underhead Angle/Radius: 10 degrees x 3/8 in.
  • Margin: 0.070 in.
  • Seat Width: 0.080 in.
  • Top of Head: 7-degree dish
  • Weight: 113 grams per valve

Key Features:

  • NK-844 stainless steel construction for exceptional heat and corrosion resistance
  • Chrome-plated stem for reduced friction and increased wear resistance
  • Hardened valve tip for long-term durability under high-lift, high-RPM conditions
  • Swirl polished and fully machined for consistent performance
  • Straight stem design for improved durability and stability

Manley's Severe Duty Series valves are a trusted choice among engine builders seeking performance upgrades over OEM valves. The 7-degree dish top-of-head profile and optimized underhead geometry support improved airflow and combustion efficiency in demanding race and street/strip builds.

Products specifications

Approximate Weight (g)

105

Overall Valve Length (in)

5.010 in.

Overall Valve Length (mm)

127.3mm

Quantity

Sold as a set of 8.

Swirl Polished

No

Undercut Stem

No

Valve Head Diameter (in)

1.940 in.

Valve Head Diameter (mm)

49.3mm

Valve Head Style

7 degree dish

Valve Material

NK-844 stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.311 in

Valve Stem Diameter (mm)

7.9mm

It was easy to order and the truck bed extender we bought was the lowest price we could find! However, the shipping charge was higher than what was posted on the comparison sight. Nevertheless, it still came in under the next highest price from a different vendor.

I hope the product is as good as the speed I received the item. I even made a mistake on my order, and it still arrived fast. Thanx, will do business with again.

Order arrived quickly and was exactly as described. Great prices and service!

Fantastic ! Ordered a Weather Tech Cargo Liner for my 2012 Ford Explorer. Price was $60 less here than ALL other sites on web. I was skeptical that this was going to be a counterfeit -- as the price was too good to be true. I was extremely happy to receive the genuine product as I expected in less than a week -- and for $60 less than the competitors ! GREAT VALUE and great service ! I will definitely be back !!

Very fast shipping and price is rite

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