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Manley Severe Duty Series Stainless Steel Valves 11811-1 Valve, Exhaust, Duty, 1.900 in. Head Dia., 6 Degree Dish, Chevy, Big Block, Each

SKU: MAN11811-1

Valves

Manley Severe Duty Series Stainless Steel Valves 11811-1 Valve, Exhaust, Duty, 1.900 in. Head Dia., 6 Degree Dish, Chevy, Big Block, Each

SKU: MAN11811-1

Valves
A$104.29
LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.
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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

BBC S/D 1.900in Exhaust Valve

Data: v4.2 - Upd: 2026-10-14 10:12:08

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11811-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Severe Duty Series Stainless Steel Valves
Product Attributes - UPC
807298053028
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.900 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
48.260mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.341 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
8.66mm
Product Attributes - Exhaust Overall Valve Length (in.)
5.522 in.
Product Attributes - Exhaust Overall Valve Length (mm)
140.259mm
Product Attributes - Undercut Stem
Yes
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
XH-428 stainless steel
Product Attributes - Approximate Weight (g)
126
Product Attributes - Valve Head Style
6 degree dish
Product Attributes - Valve Seat Width (in.)
0.100 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11811-1
SFX Item ID 4927355
Supplier Item Code 4927355
Manufacturer SKU 11811-1
Manufacturer UPC N/A

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine Size7.0L/427
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1970
    Engine TypeV8
    Engine Size6.5L/396
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine TypeV8
    Engine Size6.6L/402
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock

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