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Manley 11714H-8 Severe Duty Hollow Stem Intake Valve 2.080in Head

Manufacturer

Picture for manufacturer Manley

Part Number

11714H-8
11 reviews
Sale Price

$694.19

Estimated ship date Thursday, November 19

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

Built for bracket racing, oval track, and high-performance street engines, these valves deliver exceptional strength, fatigue resistance, and thermal management in demanding operating conditions.

The hollow stem design reduces reciprocating mass for improved valvetrain stability at high RPM, while the NK-844 stainless steel construction provides outstanding tensile strength and heat resistance far beyond standard alloy valves. Each valve features a chrome-plated stem, hardened tip, and a swirl-polished underhead with a fully machined combustion face for superior airflow and wear resistance.

Key Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.080 in.
  • Stem Diameter: 11/32 in. (0.3415 in.)
  • Overall Length: 5.140 in.
  • Installed Height: +0.200 in. Longer than Stock
  • Tip Length: 0.290 in.
  • Underhead Angle / Radius: 12° x 3/8 in.
  • Margin: 0.065 in.
  • Seat Width: 0.080 in.
  • Top of Head: 7° Dish
  • Material: NK-844 Stainless Steel
  • Stem Finish: Chrome
  • Tip: Hardened

Manley Severe Duty valves are extensively tested for fatigue resistance and are a preferred choice for highly modified circle track and bracket racing engines where reliability under sustained high-load conditions is critical.

Had what I needed

Placing an order went very smoothly. Thanks.

Wow!! I came across Autoplicity while searching for a fuel pump for my Trans-Am. Not only did they have the cheapest price for the part, but they also had extremely reasonable shipping cost. Most websites claim to have free shipping but it seemed the cost of shipping was added to the cost of their part. Then I find out my order was processed and shipped within one business day!! I'll definately be bookmarking Autoplicity's home page!! Thanks!!

Bought some wire looms for my Chevy from them. Great price, service, and shipping speed!

The item arrived fast and in good condition. There however seems to be a glitch with the scale the first time we weighed something. After we shut it off and then back on it seemed to be OK.

I ordered a Grant 1103 Steering Wheel, Order Number: 16767. Great prices, quick shipping, good customer service, an all around deal. Thank you.

The part I purchased had the lowest price I could find online anywhere.. Simple transaction and fast shipping.. Ordered on a Monday and delivered by Friday..

It has been a smooth and easy process. I would definitely use them again.

Great Prices and Very Fast Shipping. Will order again in the future. Customer Service was great when I called about a question with my order.

Great prices and fast delivery.

best prices around !! Shipping was FAST !

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