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Manley Titanium Valves 11925-8 Valves, Exhaust, Titanium, 1.840 in. Diameter, .3415 in. Stem, 6.550 in. Length, Pontiac V8, Each

SKU: MAN11925-8

Valves

Manley Titanium Valves 11925-8 Valves, Exhaust, Titanium, 1.840 in. Diameter, .3415 in. Stem, 6.550 in. Length, Pontiac V8, Each

SKU: MAN11925-8

Valves
A$2,922.05
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.
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Description

Manley Titanium Valves are expertly designed to reduce valvetrain weight, improve efficiency, and excel in high-RPM applications. Lightweight yet incredibly strong, they enhance throttle response, power, and durability, making them the choice of performance enthusiasts and professional engine builders. Each valve features a one-piece forged titanium construction with superior grain flow to eliminate weak points and ensure long-term strength. State-of-the-art CNC machining and precision grinding deliver tight tolerances and consistent sealing for optimal engine performance. Crafted from premium titanium alloys, Manley valves achieve the perfect balance of hardness, ductility, and fatigue resistance under extreme temperatures. Every valve undergoes rigorous quality control and final inspection, guaranteeing unmatched reliability, precision, and consistency in the most demanding racing conditions. When performance matters, Manley Titanium Valves power the winners.

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-10-14 10:04:59

Features

  • Built for extreme RPM and aggressive cams
  • CNC machined for precision
  • Lightweight titanium reduces valvetrain mass and boosts efficiency
  • One-piece forged for strength
  • Premium alloys ensure durability
  • Rigorously inspected for reliability

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11925-8
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Titanium Valves
Product Attributes - UPC
807298086446
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.840 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
46.736mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.342 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
8.67mm
Product Attributes - Exhaust Overall Valve Length (in.)
6.550 in.
Product Attributes - Exhaust Overall Valve Length (mm)
166.370mm
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
Titanium
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
110
Product Attributes - Valve Seat Width (in.)
0.075 in.
Product Attributes - Quantity
Sold as a set of 8.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11925-8
SFX Item ID 4933293
Supplier Item Code 4933293
Manufacturer SKU 11925-8
Manufacturer UPC 807298086446
Alternative References V8

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1955
    Ending Year1955
    Engine Size4.7L/287
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1956
    Ending Year1956
    Engine Size5.2L/316
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1957
    Ending Year1957
    Engine Size5.7L/347
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1958
    Ending Year1958
    Engine Size6.1L/370
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1959
    Ending Year1966
    Engine Size6.4L/389
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1963
    Ending Year1967
    Engine Size5.3L/326
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1967
    Ending Year1969
    Engine Size7.0L/428
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1967
    Ending Year1979
    Engine Size6.6L/400
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1968
    Ending Year1977
    Engine Size5.7L/350
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1970
    Ending Year1976
    Engine Size7.5L/455
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1977
    Ending Year1981
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief
  • Valve FitmentSearch by engine
    MakePONTIAC
    Beginning Year1980
    Ending Year1981
    Engine Size4.3L/265
    Engine FamilyPontiac V8
    Valve Installed Length0.100 in. over
    Cylinder Head TypeDart Big Chief

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