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Chevrolet Performance 12558060K1

Vortec Cylinder Head Top End Kit

Chevrolet Performance 12558060K1
Easy Kit


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Estimated ship date 04/06/18 if Ordered Today
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Chevrolet Performance 12558060K1 Vortec Cylinder Head Top End Kit $958.02
Vortec Top End Kit
  • Cylinder Heads
  • Intake
  • Head Gaskets
  • Head Bolts
  • Intake Gasket
  • Intake Bolts

  • Chevrolet Performance 12558060K1 Details

    Vortec Top End Kit

  • GM Performance SB-Chevy Cast Iron Vortec Cylinder Heads (2) (809-12558060)
  • JEGS Champion Series 331 Intake (555-513002)
  • JEGS Head Gaskets (2) (555-210041)
  • JEGS Head Bolt Kit (555-83400)
  • JEGS Intake Gaskets (555-210003)
  • JEGS Intake Bolt Kit (555-83201)

  • Specifications:

    Manufacturer's Part Number:

    America's favorite high-performance cast iron small block cylinder heads offer big power and bigger value. Chevrolet Vortec Cylinder Heads' fast burn combustion chamber and high-velocity ports combine to produce big horsepower. Vortec Heads can be mildly ported for additional performance and milled up to .040'' for increased compression ratio. The Vortec Heads come with various intake and exhaust valve sizes to complement the high-velocity port design and your performance needs. Vortec Heads outflow Bow Tie Heads right out of the box and are a 20 to 40 horsepower bolt-on increase over earlier cast iron small block heads. Vortec Heads require a Vortec-style intake manifold due to an improved manifold mounting flange and gasket design and raised intake ports. Modifying the heads to accept early intake manifolds is not recommended. Vortec Cylinder Heads fit all 1955-Present small blocks except LT1/LT4 reverse coolant flow engines and current LS1-style engines.

    JEGS Easy Kits are designed by JEGS professionals so you get all the parts you need.

    What liter are the heads I'm lookin for the 5.3

    Asked by: Bigwilsdad
    This kit is for the 5.7 Vortec and not compatible with a 5.3.
    Answered by: Jon Jegs Tech
    Date published: 2018-01-26

    Will this kit work for a 69 tru 80 block ?

    Asked by: 74c10
    Yes, as long as it is a 4'' bore block
    Answered by: SteveM
    Date published: 2018-02-03

    Which carburetor would work best with this set up?

    Asked by: 89RS
    A 600 CFM carburetor is a good size for that - check part number 350-1406.
    Answered by: Rusty B
    Date published: 2017-10-27

    What’s the sizes on the intake and exhaust for the vortex cylinder heads

    Asked by: Agueybana
    170cc intake and 65cc exhaust.
    Answered by: BrandonJ
    Date published: 2017-10-04

    What cams are good options with these heads? Are there any hydraulic roller cam designs with appropriate lift specs that will work with these?

    Asked by: 09melvins
    Yes you can, but those heads can only be used with a .480 max lift with out changing springs.
    Answered by: BrandonJ
    Date published: 2017-11-21
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