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Manley 11840-8 Severe Duty Pro Flo Intake Valves for Small Block Chevy

Manufacturer

Picture for manufacturer Manley

Part Number

11840-8
9 reviews
Sale Price

$301.07

2 left at this price

delivery box

Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 11840-8 Severe Duty Pro Flo Series intake valves are engineered for high-performance and racing applications requiring superior durability and flow characteristics. These premium stainless steel valves are designed specifically for Small Block Chevy engines.

Key Features:

  • Constructed from NK-844 stainless steel for exceptional strength and heat resistance
  • Chrome stems with hardened valve tips for extended service life
  • Fully machined and swirl polished for precise tolerances
  • Undercut Pro Flo stems deliver improved airflow and performance
  • 1.937-inch valve head diameter
  • 4.911-inch overall length

Manley's Severe Duty Pro Flo valves represent decades of racing experience and engineering excellence. The undercut stem design reduces weight while maximizing flow, making these valves ideal for street performance builds, circle track racing, and other demanding applications. Each valve is precision-manufactured to ensure consistent quality and performance across the entire set.

Products specifications

Approximate Weight (g)

111

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

4.911 in.

Overall Valve Length (mm)

124.739mm

Quantity

Sold as a set of 8.

Swirl-Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

1.937 in.

Valve Head Diameter (mm)

49.200mm

Valve Head Style

7 degree dish

Valve Material

NK-844 stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.342 in.

Valve Stem Diameter (mm)

8.687mm

Valve Tip Length (in)

0.250 in.

Valve Tip Length (mm)

6.350mm

Excellent shipping received very fast and well packaged

Found an item that has been unavailable every where I have looked.

Incredibly low prices and fast shipping. I bought shocks and struts for my truck and saved more than 35% over what my local parts store wanted!!! I made the mistake of not setting up my account before placing my order so I didn't get confirmation right away, but one quick phone call fixed that. Great customer service.

easy to order

thank guys didn't expect the shipment that quit,but any way thak a lot or the next order

Lowest price I could find. Cheap shipping for the size. Pretty happy

Very fast shipping and price is rite

Recently ordered a cargo liner and I must say, Autoplicity had the cheapest price anywhere! Excellent communication and super fast shipping! Will definitely do business with Autoplicity again! Thank you for a wonderful shopping experience!

I am impressed with they mail order service. Recommended.

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