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JEGS Performance Products 514005

Cylinder Head Small Block Chevy Vortec Cast Iron

JEGS Performance Products 514005


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Estimated ship date 05/31/17 if Ordered Today
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JEGS Performance Products 514005 Cylinder Head Small Block Chevy Vortec Cast Iron $256.99
Cylinder Head
  • Small Block Vortec
  • 170cc Intake Ports
  • 64cc Combustion Chambers
  • 1.940"Int./1.500"Exh. Valves
  • 1.250" Valve Springs, .475"Max Lift
  • 3/8" Rocker Studs
  • Straight Plug
  • Assembled, Sold Individually

  • JEGS Performance Products 514005 Details

    170cc Intake Runner

    • Made in the USA
    Casting Iron
    Valve Guides Manganese Bronze
    Valve Seats Steel
    Valve Train
    Rocker Stud Size 3/8"-24
    Guide Plates 5/16" Flat
    Pushrods 5/16" Hardened, Must Check Length
    Spring Retainers Chrome Moly Steel (7 Degree)
    Valve Locks 7 Degree (HD)
    Spring Locator I.D. Locator - 1.253" x 0.120"
    Valve Springs
    Specifications Pressure
    Spring O.D. Type Max Lift Seat Load Solid Height
    1.250" Single 0.475" 80# @ 1.700" 1.200"
    Spark Plugs 14mm x 3/4" Reach - Gasket Seat - 5/8" Hex
    Head Bolts JEGS 555-83400 or equivalent
    Head Studs Standard SB-Chevy
    Stud Girdle JEGS 555-20510 or equivalent
    Rocker Arms Standard SB-Chevy for 3/8"-24 Stud
    Head Gasket JEGS 555-210041 or equivalent
    Accessory Bolt Locations Stock Placement
    Flow Specifications
    Flow Graph Intake Exhaust
    Port Volume 170cc 61cc
    Valve Diameter 1.940"
    (Stainless Steel)
    (Stainless Steel)
    Valve Length 4.910" 4.910"
    Valve Stem Diameter 11/32" 11/32"
    Valve Stem Seal Diameter 0.500" (Rubber) 0.500" (Rubber)
    Port Dimension 1.080"H x 2.000"W 1.500"H x 1.580"W (Rectangular)
    Flow Rate 211.37 CFM @ 0.500" Lift (28" H20) 157.41 CFM @ 0.500" Lift (28" H20)
    Gasket JEGS 555-210003
    or equivalent
    JEGS 555-210050
    or equivalent
    Torque Specification
    Rocker Studs 45 ft/lbs.
    Manifold Bolts 11 ft/lbs.
    Head Bolts or Studs Per Manufacturers Specifications


    Engine Make/Size
    Chevy Small Block (262-400)
    Cast Iron
    Combustion Chamber Volume (cc)
    Cylinder Head Style
    Exhaust Port Shape
    Exhaust Valve Diameter (in.)
    Guideplate Pushrod Size (in.)
    Guideplates Included
    Intake Runner Volume (cc)
    Intake Valve Diameter (in.)
    Number of Springs Per Valve
    Outside Diameter of Outer Spring (in.)
    Sold individually
    Rocker Arm Nut Thread Size (in.)
    Rocker Arm Studs Included
    Spark Plug Style
    Maximum Valve Lift (in.)
    Intake Port Shape
    Exhaust Runner Volume (cc)

    Racing technology for your high performance street engine! Most of our small block Chevy cylinder heads are cast from Virgin A356 Aluminum and heat treated to a T6 Hardness for the ultimate quality and durability. They are then machined on the latest CNC machines for accuracy and precision. We use the most up to date technology to design our intake and exhaust runners and combustion chambers for maximum performance. Our choices of intake runner volumes, combustion chamber sizes, spark plug styles and valve spring sizes insure that we have a cylinder head to suit your needs. Our cylinder heads are assembled with premium parts such as manganese valve guides, stainless steel valves and chrome-moly retainers. They feature valve seats that are compatible with unleaded fuel and also accept both standard and center bolt valve covers.

    • Cast in the U.S.A.
    • Machined in the U.S.A.
    • Assembled in the U.S.A.
    • 3-Angle Competition Valve Job
    • Improved Combustion Chamber Design For Improved Efficiencies
    • 1/2" Deck Thickness
    • Exhaust Ports Raised 0.200" (Higher Than Stock OEM Iron Heads)
    • Raised Valve Cover Rails
    • Latest In Port Design For Both The Intake and Exhaust For Increased Horsepower and Torque
    • Premium parts and hardware
    • Up to 20 lbs. lighter per head than standard cast iron heads

    JEGS EZ Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.

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