Skip to main content

Manley · 11688H-8

Part #: 11688H-8
UPC: 807298069753

Loading availability... Log in for inventory
Notify me when this item is in stock.

Description: Manley Valve - Intake, Valve-LS7 P/F 2.205 HOLLOW

Description:

Description

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.

Features & benefits

  • Proven fatigue strength for extreme performance
  • Chrome stems and hard tips enhance durability
  • Exotic alloys for superior tensile strength, reliability, and longevity
  • Swirl polishing and machined faces improved airflow/optimized efficiency

Information

Manley Valve - Intake, Valve-LS7 P/F 2.205 HOLLOW.

Specifications

GTIN
00807298069753
Weight
4 lb
Height
2.5 in
Length
11.75 in
Width
6.75 in
EO
Offroad
Life cycle
Available to Order
Warehouse brand code
BBPB
AAIA brand code
BBPB

Attributes

California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category Hierarchy
Valves>Stainless Steel>Severe Duty
EBAY Category ID
33621
Engine
LS7
Engine - Web
LS
Engine Detail - Web
LS7
Engine Family
LS
Engine Type
ICE
Engine Valve Quantity
8
Head Diameter
2.205
Industry
Automotive
Make
Chevrolet
Make - Web
Chevrolet
Margin Width
0.050
O/A Length
5.200
Out of Stock Message
Call for Availability
Product Market
Domestic
Product Type
Engine Intake Valve Kit
Seat Width
0.100
Stem Diameter
0.3133
Tip Length
0.300
Title
Manley Valve - Intake Valve - LS7 P/F 2.205 HOLLOW
Title - Web
Manley Severe Duty? Series Chevrolet LS7 Intake Valve Kit - 2.205 in. Head Dia., 5.200 in. O/A Length, 0.3133 in. Stem
Top of Head
7 Degree Dish
Type
Intake
Underhead Angle
Pro Flo: 12.00
Underhead Radius
3/8
Valve Head Diameter
2.205
Valve Head Shape
7 Degree Dish
Valve Length
5.200
Valve Material
Stainless Steel
Valve Quantity
8
Valve Series
Severe Duty? Series
Valve Stem Diameter
0.3133
Valve Sub-Series
Pro Flo
Valve Tip Length
0.300
Valve Type
Intake

Fitment status

This product is universal and will fit your application.

Resources

There are no resources available for this part.