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Manley 11750-8 Severe Duty Stainless Steel Intake Valves

Manufacturer

Picture for manufacturer Manley

Part Number

11750-8
4 reviews
Sale Price

$301.07

2 left at this price

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Usually delivered within 2 days

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Product Details

The Manley 11750-8 Severe Duty Series Intake Valves are engineered for high-performance and race applications demanding superior durability and consistent flow. Manufactured from NK-844 stainless steel with a chrome-plated stem and hardened tip, these valves are swirl-polished and fully machined for optimal sealing and longevity under extreme operating conditions.

Each valve features a straight stem design for enhanced structural integrity and a 2.020 in. head diameter to support strong intake flow in performance engine builds. The 10-degree underhead angle with a 3/8 in. radius promotes smooth airflow transition, while the 7-degree dish top-of-head geometry aids in combustion efficiency.

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
  • Valve Weight: 113 grams per valve
  • Stem Finish: Chrome-plated
  • Material: NK-844 Stainless Steel

Manley's Severe Duty Series valves are a trusted choice among engine builders looking for race-proven components that deliver consistent performance, extended service life, and resistance to heat and wear in demanding race environments.

Products specifications

Approximate Weight (g)

132

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.240 in.

Overall Valve Length (mm)

133.096mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

Yes

Valve Head Diameter (in)

2.100 in.

Valve Head Diameter (mm)

53.340mm

Valve Head Style

7 degree dish

Valve Material

NK-844 stainless steel

Valve Stem Diameter (in)

0.341 in.

Valve Stem Diameter (mm)

8.661mm

Valve Tip Length (in)

0.290 in.

Valve Tip Length (mm)

7.366mm

Great prices. Fast shipping I will order more stuff in the future from here thanks

Fast. Quality . Low price

Once i installed the BULLY DOG GT TRIPPLE DOG GAS TUNER PROGRAMER on my newerbody style 07 gmc sierra 1500, My mpg average went from 12 to 18. Instant improvement and performance. Not to mention the truck is lifted 7.5 in with 37 in tires. Easy programing settings takes minuets. The power the 5.3 puts out after my Bully Dog gas tuner was installed was fanominal. I will deff get my money back in fuel over about a year. Can't go wrong purchasing. This item. MUST HAVE PRODUCT.

Autoplicity has a great selection of parts, great companies and great prices. Shipping was very fast and payment very easy. Will be shopping here in the future.

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