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JEGS Performance Products 514002 - JEGS Small Block Chevy Cylinder Heads

JEGS Performance Products 514002 - JEGS Small Block Chevy Cylinder Heads

JEGS Performance Products#555-514002

Cylinder Head
  • Small Block Chevy
  • 180cc Intake Ports
  • 64cc Combustion Chambers
  • 2.020"Int./1.600"Exh. Valves
  • 1.250" Valve Springs, .525" Max Lift
  • 3/8" Rocker Studs
  • Straight Plug
  • Assembled, Sold Individually

    JEGS Performance Products 514002 - JEGS Small Block Chevy Cylinder Heads Details

    180cc Intake Runner

    Casting A356-A Virgin Grade, Heat Treated to T-6
    Valve Guides Manganese Bronze
    Valve Seats Alloy, For use with Unleaded Gasoline
    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 - 1.490" x 0.060"
    Valve Springs
    Specifications Pressure
    Spring O.D. Type Max Lift Coil Bind Seat Load Open Load
    1.250" Single 0.525" 1.160" 100# @ 1.775" 320# @ 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 180cc 85cc
    Valve Diameter 2.020"
    (Stainless Steel)
    (Stainless Steel)
    Valve Length 4.910" 4.910"
    Valve Stem Diameter 11/32" 11/32"
    Valve Stem Seal Diameter 0.530" (Teflon) 0.530" (Teflon)
    Port Dimension 2.200"H x 1.300"W 1.530"H x 1.545"W (D-Shape)
    Flow Rate 263 CFM @ 0.600" Lift (28" H20) 213 CFM @ 0.600" Lift (28" H20)
    Gasket JEGS 555-210000
    or equivalent
    JEGS 555-210052
    or equivalent
    Torque Specification
    Rocker Studs 45 ft/lbs.
    Manifold Bolts 35 ft/lbs.
    Head Bolts or Studs Per Manufacturers Specifications

    Racing technology for your high performance street engine! 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 .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.

  • Rated 1 out of 5 by from Low score on quality control I bought these after reviewing Car Craft's 8 Budget Heads Comparison. I liked the peak torque produced about 4,000 RPM with the combo used. When I received them they were still full of aluminum shavings from machine work. There were spots between the intake ports that were as thin as 1/16 of an inch. The exhaust ports also had about a 1/16 of an inch of material between the port and the bolt holes to mount the headers. The guide plates did not line up with the pushrod holes in the heads. The intake ports have an obstruction in the casting. I returned them and stepped up to a pair of AFR 180cc Street Eliminator's which I will review when I receive them. I have used cheaper heads than the Jeg's heads (ProStar) and the quality was better at 2/3 the price.
    Date published: 2014-11-02
    • 2015-10-09T11:02CST
    • bvseo_cps, prod_bvrr, vn_cps_3.1.6
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_1
    • loc_en_US, sid_10001_10001_1533684, PRD, sort_relevancy
    • clientName_jegs

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