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Manley 11756-8 Severe Duty Intake Valve Stainless Steel - 2.020 NK-844

(2003-2008 Nissan 350Z)

Part of: Manley Severe Duty Stainless Steel Intake Valve

Other options in this family: Manley 11826-8 Manley 11543-8 Manley 11850-8 Manley 11846-8 Manley 11772-1

Manufacturer

Picture for manufacturer Manley

Part Number

11756-8
5 reviews
Sale Price

$311.48

Estimated ship date Saturday, November 28

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Product Details

The Manley 11756-8 is a severe duty performance intake valve engineered for high-performance race engines. Constructed from premium NK-844 stainless steel, this valve features a chrome stem and hardened valve tip for maximum durability under extreme operating conditions.

Key Specifications:

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

Performance Features:

  • NK-844 stainless steel construction for superior strength and heat resistance
  • Chrome stem for reduced friction and extended wear life
  • Hardened valve tip to prevent stem seal damage and guide wear
  • Straight stem design for increased durability and reliability
  • Swirl polished and fully machined for precise fitment
  • 7 degree dish top for optimized combustion chamber design

This severe duty series valve is ideal for racing applications where reliability and performance are critical. The superior material composition and precision machining ensure consistent performance under the demanding conditions of high-RPM racing engines.

Products specifications

Fits

2003-2008 Nissan 350Z

Approximate Weight (g)

134

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.340 in.

Overall Valve Length (mm)

135.636mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

Yes

Valve Head Diameter (in)

2.125 in.

Valve Head Diameter (mm)

53.975mm

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

Make

Chevrolet

Valve Head Diameter

2.125

Stem Diameter

0.3415

Engine

Small Block

Engine Type

ICE

Product Type

Engine Intake Valve Kit

Seat Width

0.080

Tip Length

0.290

Top of Head

7 Degree Dish

Valve Stem Diameter

0.3415

Valve Type

Intake

Valve Series

Severe Duty? Series

Engine Valve Quantity

8

Margin Width

0.065

Underhead Angle

12.00

Underhead Radius

3/8

Valve Head Shape

7 Degree Dish

Valve Quantity

8

Valve Tip Length

0.290

O/A Length

5.340

Valve Length

5.340

Head Diameter

2.125

Title

Manley Valve - Intake, Valve-S/D 2.125,+.400

found what I needed

Very easy to talk to on the phone and excellent service.

Cheapest I can find for this product. I would buy from this seller again.

shipped fast and great price

I was genuinely impressed with their price for my item and truly happy with the speed of their shipping. I'll definately look forward to buying from Autoplicity in the future!

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