Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Manley Performance

Manley Performance

Manley Severe Duty Series Stainless Steel Valves 11580-1 Valve, Intake, Duty, Steel, 2.325 in. Diameter, 0.3415 in. Stem, 6.59 in. Length, Each

SKU: MAN11580-1

Valves
Manley Severe Duty Series Stainless Steel Valves 11580-1 Valve, Intake, Duty, Steel, 2.325 in. Diameter, 0.3415 in. Stem, 6.59 in. Length, Each
Manley Performance

Manley Performance

Manley Severe Duty Series Stainless Steel Valves 11580-1 Valve, Intake, Duty, Steel, 2.325 in. Diameter, 0.3415 in. Stem, 6.59 in. Length, Each

SKU: MAN11580-1

Valves
A$110.57
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Manley Severe Duty series performance valves are a great choice for your high performance or race engine. All valves are made from stainless steel (intakes are NK-844; exhausts are XH-428) with chrome stems and hardened valve tips. Severe Duty series valves are made of superior materials, are fully machined and swirl polished, and are available with either undercut "Pro Flo" stems or straight stems.

Part Type

Valves

Data: v4.2 - Upd: 2026-10-14 10:12:07

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11580-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Severe Duty Series Stainless Steel Valves
Product Attributes - UPC
807298050584
Product Attributes - Valve Position
Intake
Product Attributes - Intake Valve Head Diameter (in.)
2.325 in.
Product Attributes - Intake Valve Head Diameter (mm)
59.055mm
Product Attributes - Intake Valve Stem Diameter (in.)
0.342 in.
Product Attributes - Intake Valve Stem Diameter (mm)
8.67mm
Product Attributes - Intake Overall Valve Length (in.)
6.590 in.
Product Attributes - Intake Overall Valve Length (mm)
167.386mm
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-844 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
165
Product Attributes - Valve Head Style
5 degree dish
Product Attributes - Valve Seat Width (in.)
0.075 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11580-1
SFX Item ID 4927368
Supplier Item Code 4927368
Manufacturer SKU 11580-1
Manufacturer UPC 807298050584

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1965
    Ending Year1970
    Engine TypeV8
    Engine Size6.5L/396
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1965
    Ending Year1970
    Engine TypeV8
    Engine Size6.5L/396
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypePontiac Pro Stock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine Size7.0L/427
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine Size7.0L/427
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypePontiac Pro Stock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine TypeV8
    Engine Size6.6L/402
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine TypeV8
    Engine Size6.6L/402
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypePontiac Pro Stock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
    Cylinder Head TypePontiac Pro Stock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen V
    Valve Installed LengthStock
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen V
    Valve Installed LengthStock
    Cylinder Head TypePontiac Pro Stock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen VI
    Valve Installed LengthStock
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen VI
    Valve Installed LengthStock
    Cylinder Head TypePontiac Pro Stock

Loading compatibility information...

Keep shopping

More from Manley Performance