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Manley Street Master Valves 10868-8 Valve, Intake, Stainless Steel, 2.250 in. Diameter, .342 in. Stem, 5.494 in. Length, Set of 8

SKU: MAN10868-8

Valves

Manley Street Master Valves 10868-8 Valve, Intake, Stainless Steel, 2.250 in. Diameter, .342 in. Stem, 5.494 in. Length, Set of 8

SKU: MAN10868-8

Valves
A$310.89
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

Manley Street Series valves are the ideal choice for enthusiasts looking to boost the performance of a stock or mildly modified street engine.

Part Type

Engine Intake Valve

Data: v4.2 - Upd: 2026-10-16 20:07:30

Features

  • Chrome Stems and Hard Tips: These valves feature chrome stems and hard tips for increased durability and wear resistance, making them suitable for demanding applications.
  • High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity.
  • Swirl Polished and Fully Machined: The under head areas are meticulously swirl polished, and the combustion faces are fully machined, enhancing airflow and combustion efficiency.
  • Variety of Shapes: Choose from the Street Master (Straight Stem) or Street Flo shapes, allowing you to customize your valve selection based on your specific needs.

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
10868-8
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Street Master Valves
Product Attributes - UPC
807298077369
Product Attributes - Valve Position
Intake
Product Attributes - Intake Valve Head Diameter (in.)
2.250 in.
Product Attributes - Intake Valve Head Diameter (mm)
57.150mm
Product Attributes - Intake Valve Stem Diameter (in.)
0.342 in.
Product Attributes - Intake Valve Stem Diameter (mm)
8.69mm
Product Attributes - Intake Overall Valve Length (in.)
5.494 in.
Product Attributes - Intake Overall Valve Length (mm)
139.548mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.250 in.
Product Attributes - Valve Tip Length (mm)
6.350mm
Product Attributes - Valve Material
NK-841 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
135
Product Attributes - Valve Head Style
5 degree dish
Product Attributes - Valve Seat Width (in.)
0.080 in.
Product Attributes - Quantity
Sold as a set of 8.
Product Attributes - Notes
Underhead angle/radius 10 x .375 in. Margin 0.050 in.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man10868-8
SFX Item ID 4927457
Supplier Item Code 4927457
Manufacturer SKU 10868-8
Manufacturer UPC 807298077369

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1965
    Ending Year1970
    Engine Size6.5L/396
    Engine FamilyChevy big block Mark IV
    Valve Installed Length0.250 in. over
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine Size7.0L/427
    Engine FamilyChevy big block Mark IV
    Valve Installed Length0.250 in. over
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine Size6.6L/402
    Engine FamilyChevy big block Mark IV
    Valve Installed Length0.250 in. over
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine Size7.4L/454
    Engine FamilyChevy big block Mark IV
    Valve Installed Length0.250 in. over
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen V
    Valve Installed Length0.250 in. over
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen VI
    Valve Installed Length0.250 in. over
    Cylinder Head TypeStock configuration

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