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Chevrolet Performance 12558060K1

Vortec Cylinder Head Top End Kit

Chevrolet Performance 12558060K1
Easy Kit

809-12558060K1

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Chevrolet Performance 12558060K1 Vortec Cylinder Head Top End Kit $986.92
Vortec Top End Kit
Includes:
  • 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:
    12558060K1

    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.

    Is kit available with spead bore intake?

    Asked by: bobscomputer
    No, but it is avaialbe without an intake so you can choose the one you would like to use - http://www.jegs.com/i/Chevrolet-Performance/809/12558060K2/10002/-1
    Answered by: Rusty B
    Date published: 2018-04-05

    I have a '92 suburban, 350, will the throttle body fit and work well with this set up? What would be a good cam to go along with this?

    Asked by: Gmfan
    You would need an adapter plate for the throttle body, and pairing this with a cam upgrade will probably require a custom-burned chip among other upgrades.
    Answered by: Matt_B
    Date published: 2018-04-01

    Would a stock pushrod work with this kit. The can is stock

    Asked by: Tpac
    This will still use stock pushrods.
    Answered by: Jon Jegs Tech
    Date published: 2018-03-18

    Will this set up fit under the stock hood of a 79 vette

    Asked by: Tpac
    This should fit, however, we recommend checking hood clearance before everything is bolted down.
    Answered by: Jon Jegs Tech
    Date published: 2018-03-18

    Was wondering if this kit would fit my 2000 5.3 if not which kit would be best?

    Asked by: Mojavi16
    No, you need the LS series Please call our tech line for assistance 1-800-345-4545 ext 2001
    Answered by: Rusty B
    Date published: 2018-03-14

    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: 2018-04-06

    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: 2018-03-08
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations