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Manley Stainless Steel Performance Valves


Manley
Manley Stainless Steel Performance Valves

Product images may differ from actual product appearance.

Manley Stainless Steel Performance Valves are held to the highest standards. Swirl-polished heads, chromed stems and hardened tips provide the advantage you expect from America's premier valve manufacturer! Sold Individually or 8/pkg. Made in the USA!

Budget Performance Replacement
  • For stock rebuild or mild performance applications
  • Superior to OE construction in every aspect

    Street Flo
  • For street/strip applications
  • Fully-machined combustion faces and necked-down stems

    Street Master
  • For bracket racer engines and street performance
  • Straight stems provide extra meat for outstanding durability

    Race Flo
  • For mild drag or circle track engines and street performance
  • Necked-down stems for less weight and more flow

    Race Master
  • For mild drag or circle track engines and street performance
  • Similar to Race Flo valves except with straight stems

    Pro Flo
  • For drag, circle track, and hot street engines
  • Stainless steel undercut design for less weight and up to 40% more flow

    Severe Duty
  • For applications with high spring pressures and high RPM
  • One-piece stainless steel design

    Extreme Duty
  • For drag racing applications with 8000+ RPM
  • Offshore powerboat and Hi performance marine applications
  • Also, for engine builders using EV-8, high performance street, bracket racers, oval track and sportsman racers


  • 19 Products
    SB-Chevy and LS Series with 8mm Stem
    Manley 12346-8 - Manley Stainless Steel Performance Valves
    660-12346-8
    Severe Duty Valves
  • Type: Intake
  • Length: +.100"
  • Head Diameter: 2.125"
  • Stem Diameter: .3133"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $241.99
    Order Today Ships 02/23/16
    BB-Chevy with 11/32" stem
    Manley 12341-8 - Manley Stainless Steel Performance Valves
    660-12341-8
    Race Master Valve
  • Type: Exhaust
  • Length: +.500
  • Head Diameter: 1.800"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    Manley 12339-8 - Manley Stainless Steel Performance Valves
    660-12339-8
    Severe Duty Valves
  • Type: Exhaust
  • Length: +.100
  • Head Diameter: 1.850"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $232.99
    Order Today Ships 02/23/16
    Manley 12340-8 - Manley Stainless Steel Performance Valves
    660-12340-8
    Severe Duty Valves
  • Type: Intake
  • Length: +.350
  • Head Diameter: 2.375"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $241.99
    Order Today Ships 02/23/16
    Manley 12343-8 - Manley Stainless Steel Performance Valves
    660-12343-8
    Severe Duty Valves
  • Type: Exhaust
  • Length: +.500
  • Head Diameter: 1.800"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $232.99
    Order Today Ships 02/23/16
    Manley 12344-8 - Manley Stainless Steel Performance Valves
    660-12344-8
    Severe Duty Valves
  • Type: Intake
  • Length: +.780
  • Head Diameter: 2.400"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $241.99
    Order Today Ships 02/23/16
    SB-Ford with 11/32" stem (for use with non-rail or roller rockers)
    Manley 11531-8 - Manley Stainless Steel Performance Valves
    660-11531-8
    Race Flo Valves
  • Type: Exhaust
  • Length: Standard
  • Head Diameter: 1.600"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    Manley 11532-8 - Manley Stainless Steel Performance Valves
    660-11532-8
    Race Flo Valves
  • Type: Intake
  • Length: Standard
  • Head Diameter: 1.940"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    SB-Ford with 11/32" stem (for use with rail-type rockers)
    Manley 10775-8 - Manley Stainless Steel Performance Valves
    660-10775-8
    Street Flo Valves
  • Type: Exhaust
  • Length: Standard
  • Head Diameter: 1.550"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $122.99
    Order Today Ships 02/23/16
    Manley 10778-8 - Manley Stainless Steel Performance Valves
    660-10778-8
    Street Flo Valves
  • Type: Intake
  • Length: Standard
  • Head Diameter: 1.580"
  • Stem Diameter: .3420"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $122.99
    Order Today Ships 02/23/16
    Ford 429-460 with 11/32" stem
    Manley 11529-8 - Manley Stainless Steel Performance Valves
    660-11529-8
    Severe Duty Valves
  • Type: Exhaust
  • Length: Standard
  • Head Diameter: 1.760"
  • Stem Diameter: .3415"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $232.99
    Order Today Ships 02/23/16
    SB-Chrysler with 3/8" stem
    Manley 11782-8 - Manley Stainless Steel Performance Valves
    660-11782-8
    Severe Duty Valves
  • Type: Intake
  • Length: Standard
  • Head Diameter: 2.020"
  • Stem Diameter: .3715"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    Manley 11783-8 - Manley Stainless Steel Performance Valves
    660-11783-8
    Severe Duty Valves
  • Type: Exhaust
  • Length: Standard
  • Head Diameter: 1.625"
  • Stem Diameter: .3715"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    BB-Chrysler with 3/8" stem
    Manley 11859-8 - Manley Stainless Steel Performance Valves
    660-11859-8
    Race Flo Valves
  • Type: Exhaust
  • Length: Standard
  • Head Diameter: 1.740"
  • Stem Diameter: .3720"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    Manley 11892-8 - Manley Stainless Steel Performance Valves
    660-11892-8
    Race Flo Valves
  • Type: Intake
  • Length: Standard
  • Head Diameter: 2.080"
  • Stem Diameter: .3720"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Order Today Ships 02/23/16
    Manley 11834-8 - Manley Stainless Steel Performance Valves
    660-11834-8
    Pro Flo Valve
  • Type: Intake
  • Length: Standard
  • Head Diameter: 2.140"
  • Stem Diameter: .3720"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $241.99
    Order Today Ships 02/23/16
    Manley 11876-8 - Manley Stainless Steel Performance Valves
    660-11876-8
    Severe Duty Valves
  • Type: Intake
  • Length: Standard
  • Head Diameter: 2.080"
  • Stem Diameter: .3720"
  • 8/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $241.99
    Order Today Ships 02/23/16
    Dodge Viper V10
      660-11642-10
    Race Master Valves
  • Type: Intake
  • Length: +.110"
  • Head Diameter: 1.920"
  • Stem Diameter: .3415"
  • 10/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $187.99
    Order Today Ships 02/23/16
      660-11643-10
    Race Master Valves
  • Type: Exhaust
  • Length: +.110"
  • Head Diameter: 1.600"
  • Stem Diameter: .3415"
  • 10/pkg
  • FREE
    SHIPPING
    & HANDLING!
    $187.99
    Order Today Ships 02/23/16

    19 Products