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JEGS Cylinder Head for GM LS3 Gen 4 6.2L Engines

555-514050


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Cylinder Head for GM LS3 Gen 4 6.2L Engines
$713.99
$649.99
SAVE $64.00
More than 10 available
Cylinder Head
  • Fits GM LS3 Gen 4 6.2L Engines
  • As-Cast 260cc Intake Runner
  • 2.165 in. Intake
  • 1.59 in. Exhaust Valves
  • 68cc Combustion Chamber
  • For use with LS Engines with 4 in. or Larger Bore
  • Sold Individually
  • Free Shipping - Ships
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    514050 is rated 5.0 out of 5 by 4.
    Rated 5 out of 5 by from Heads up Been almost a year and they seem fine. Definitely feel more power, better response. Replaced original 823 heads when a valve seat came loose in my 6.2 L9H. Make sure you buy the rear cooling port plugs. Found out the hard way those rear cooling ports are open.
    Date published: 2024-04-07
    Rated 5 out of 5 by from Great casting Great casting I would have to say barely any roughness in the ports. I’ve had many sets of heads and had many of imperfections in the ports these heads have the best cast ports I’ve had yet
    Date published: 2021-10-31
    Rated 5 out of 5 by from It's a cylinder head. Vroom Head where shipped to me and work great. Shipping boxes were very safe and secure.
    Date published: 2020-11-10
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    What would compression ratio be on lq9 bottom end?  Will it work on 6.0?

    Asked by: Biggary99
    Using the Jegs 555-514050 heads on an LQ9 would result in a compression ratio of approximately 10.4:1
    Answered by: Seth
    Date published: 2024-10-17

    Combustion chamber size is listed as 68cc in one section of the part description and 70cc in the bottom section of the part description.  Is it 68cc or 70cc for combustion chamber? 

    Asked by: HunterP
    The Jegs 555-514050 cylinder head has 68 cc on the combustion chamber.
    Answered by: jshook
    Date published: 2024-08-09

    Are these the light weight valve configuration the 821 casting heads come with ?

    Asked by: Steve
    The Jegs 555-514050 cylinder heads use all stock components.
    Answered by: jshook
    Date published: 2024-08-09

    Flow numbers

    Asked by: Driggers427
    The Jegs 555-514050 cylinder head is stock flow.
    Answered by: jshook
    Date published: 2024-08-08

    Are there two heads or just one

    Asked by: Trey
    The Jegs 555-514050 cylinder head is sold as each (1)
    Answered by: jshook
    Date published: 2024-09-10

    What is the maximum valve lift on the included springs?

    Asked by: Scotty
    The Jegs 555-514050 cylinder head has a max valve lift of .570 out of the box.
    Answered by: jshook
    Date published: 2023-07-21

    Can these heads be ordered with a .650 lift double spring?

    Asked by: Dave
    Jegs 555-514050 we do not have an option for a .650" lift spring
    Answered by: langus
    Date published: 2022-11-16

    Max lift on the springs?

    Asked by: Nut408
    The Jegs 555-514050 has a maximum lift of .570.
    Answered by: jshook
    Date published: 2024-01-03
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