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Manley 12346-8

Severe Duty Valves Type: Intake

Manley 12346-8
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660-12346-8

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Estimated ship date 10/03/17 if Ordered Today
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Manley 12346-8 Severe Duty Valves Type: Intake $282.99
Severe Duty Valves
  • Type: Intake
  • Length: +.100"
  • Head Diameter: 2.125"
  • Stem Diameter: .3133"
  • 8/pkg

  • Manley 12346-8 Details

    SB-Chevy and LS Series with 8mm Stem

    SMALL BLOCK CHEVROLET - AFR 180cc, 190cc, 195cc, 210cc, 220cc, 227cc, 235cc, 245cc SERIES CYLINDER HEADS

    Technical Notes:
  • Lightweight 8mm stems
  • LS (.060" single radius) style keeper grooves
  • Use Manley valve lock P/N 13098-16 (7°) or 13153-16 (10°) depending on your spring/retainer choice.
  • Manley stem sizes are .3136" (exh.) and .3133" (int.) respectively. AFR heads have guides sized to .3147" (nominal). Manley strongly recommends that all guides be checked and correctly sized (machine work required) for the Manley valve stem sizes listed to achieve the proper clearances.

  • Specifications:

    Manufacturer's Part Number:
    12346-8

    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. !

    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

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