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Manley Small Block Chevy LS-1/LS-2 (LS-6 Head) Race Flo Intake Valves (Set of 8)

SKU: MAN11390-8

Valves

MAN Race Flo Valves...

Manley Small Block Chevy LS-1/LS-2 (LS-6 Head) Race Flo Intake Valves (Set of 8)

SKU: MAN11390-8

Valves

MAN Race Flo Valves...

A$385.81
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 Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM.

Part Type

Engine Intake Valve

Data: v4.2 - Upd: 2026-10-13 17:07:35

Features

  • Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
  • Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
  • Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
  • Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
  • Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11390-8
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Race Series Stainless Steel Valves
Product Attributes - UPC
807298051659
Product Attributes - Valve Position
Intake
Product Attributes - Intake Valve Head Diameter (in.)
2.055 in.
Product Attributes - Intake Valve Head Diameter (mm)
52.197mm
Product Attributes - Intake Valve Stem Diameter (in.)
0.313 in.
Product Attributes - Intake Valve Stem Diameter (mm)
7.95mm
Product Attributes - Intake Overall Valve Length (in.)
4.874 in.
Product Attributes - Intake Overall Valve Length (mm)
123.800mm
Product Attributes - Undercut Stem
Yes
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.175 in.
Product Attributes - Valve Tip Length (mm)
4.445mm
Product Attributes - Valve Material
NK-842 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
106
Product Attributes - Valve Head Style
7 degree dish
Product Attributes - Valve Seat Width (in.)
0.095 in.
Product Attributes - Quantity
Sold as a set of 8.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11390-8
SFX Item ID 4060374
Supplier Item Code 4060374
Manufacturer SKU 11390-8
Manufacturer UPC 807298051659
Alternative References LS-1/LS-2, (LS-6

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed LengthStock
    Cylinder Head TypeLS6
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed LengthStock
    Cylinder Head TypeTrick Flow Gen X
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year2005
    Ending Year2009
    Engine TypeV8
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed LengthStock
    Cylinder Head TypeLS6
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year2005
    Ending Year2009
    Engine TypeV8
    Engine Size6.0L/364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed LengthStock
    Cylinder Head TypeTrick Flow Gen X

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