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Chevrolet Performance SBC Cast Iron Vortec Cylinder Head 170cc Intake Ports


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Chevrolet Performance 12558060
Small Block Chevy Cast Iron Vortec Cylinder Head
  • 170cc Intake Ports
  • 64cc Combustion Chambers
  • 1.940'' Int/1.500'' Exh Valves
  • .475'' Max Lift
  • Straight Plug
  • Assembled, Sold Individually
  • Thank you! We will notify you when this product becomes available.

    Save $10 off $299+, $20 off $599+, $30 off $799+, $100 off $1,599 Orders. Promo Code: BURNOUT exclusions apply

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    12558060 is rated 4.8 out of 5 by 5.
    Rated 5 out of 5 by from They look like the stock heads.
    Date published: 2019-07-02
    Rated 5 out of 5 by from Heads fit perfect 87 5.7l block!
    Date published: 2018-03-20
    Rated 5 out of 5 by from Vortec Cylinder Head Pleased with the part. Found Jegs to be more expensive on the needed accessory parts: head gasket, new intake, intake gasket, and bolt kits. Bought those from Summit.
    Date published: 2017-04-28
    Rated 5 out of 5 by from Exactly as described! Product was delivered faster than promised and was great quality!! Don't bother shopping at any other parts suppliers, Jegs has it all.
    Date published: 2014-11-02
    Rated 4 out of 5 by from Great heads for the money; super-fast shipping Even though their price has risen substantially, these GM Vortec heads are still a great value compared to properly rebuilt GM heads or new aftermarket heads. And I'm not sure any of the Vortec copies flow as well at low lifts (up to .500") as the real GM versions. That said, my heads' valve travel was only approx .480" before the retainers hit the guide seals. I was able to increase that to approx .510" by fully seating the seals using an old seal and 1/2" socket. That's more than enough (including safety margin) for my cam's .451" valve lift.
    Date published: 2014-12-26
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    Is the Comp Cam 249-12-600-4 useful with this heads? Thanks 

    Asked by: Arechiga
    You can use this cam with these cylinder heads, Check the springs for coil bind.
    Answered by: Rusty B
    Date published: 2018-08-28

    I have to run a stock cast iron intake with a 4412 2 barrel is that possible with these heads? For a street stock class on a dirt oval

    Asked by: Adam54
    You will nee to find an intake that will fit these heads, we have aluminum. You may also need a carb adapter for the intake.
    Answered by: Rusty B
    Date published: 2018-07-26

    What diameter rocker studs does it come with?

    Asked by: DevWolf
    This will have 3/8" rocker studs.
    Answered by: Rusty B
    Date published: 2018-06-04

    question is what full roller rocker is compatible with these heads with stock height valve covers

    Asked by: 54mike
    We would recommend these rocker arms, but you will need to check the clearance as there are many different OEM valve covers available. https://www.jegs.com/i/JEGS-Performance-Products/555/20140/10002/-1
    Answered by: Rusty B
    Date published: 2018-05-25

    I have 10239906 heads i need to replace on my mercruiser 350 will these 12558060 heads work?

    Asked by: Bms30
    They will bolt on, but so not carry a marine certification if that is needed.
    Answered by: Rusty B
    Date published: 2018-04-03

    Are these sold as a set or individual

    Asked by: Aussiej3
    These are sold individually.
    Answered by: Jon Jegs Tech
    Date published: 2018-04-03

    Just purchased the vortec heads kit #12558060k2. I am now going to purchase the lunati cam#638-10120302 for sbc 350 and my question is upon ordering can i get springs and pushrods for the 507 lift??

    Asked by: Kevin Gathers
    Here is a valve spring option - http://www.jegs.com/i/JEGS-Performance-Products/555/514120/10002/-1 You will need to measure your pushrod length for the standard length that you have.
    Answered by: Rusty B
    Date published: 2018-03-13

    I know the stock Chevy vortec heads were prone to cracking in certain areas. Do these heads have a heavier casting, or are they the same as stock?

    Asked by: Big Dog76
    These are a later model design with some improvements to prevent cracking.
    Answered by: Rusty B
    Date published: 2019-01-12
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