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  1. I just wanted to share this here first! These are the same rotating assemblies we've been using in our built 5.4L GT500 aluminum shortblocks, Cobra Jet engines, and other custom applications using the 2011-2012 Specific GT500 aluminum block. These components have been tested and proven on our Dyno and at the track to support the numbers we claim!

    JDM 5.4L Aluminum GT500 Shortblock Rebuild Kit $2199.00

    Adding the prices up on these parts individually and you will come up with a parts list nearing $2500. We compacted everything together to rebuild your shortblock for only $2199.00 save nearly $300 for the consumer!
    Call us today at 732-780-0770

    Looking too bullet proof your 2011-2012 Shelby GT500 5.4L Aluminum engine? Team JDM has the answer for you with their 1200 HP rated Shortblock rebuild kit specifically designed for the 2011-2012 GT500 5.4L Aluminum engine block. The factory engine is capable is very large amounts of power and torque but the Aftermarket has proven it is easy to surpass even these levels making the stock connecting rods and other internals a weak point. Manley heavy duty H beam R series rods with ARP 2000 bolts replace the factory powder cracked I beam units. Calico coated Rod bearings and Main bearings support the rotating components and promote less heat and friction then the OEM parts. The factory cylinder bore spray-in liners in the Aluminum block are very strong but it is a very thin coating which doesn’t allow much room for over boring. Custom Mahle forged pistons designed to be used with the factory bore dimensions for a direct drop in application. For engine blocks that have been run already a .001-.002” hone is acceptable for clearance, any more and the block will require sleeves. JDM sourced a Custom package of Total Seal rings help to seal thing up nice and tight to help make Horsepower. These are the same pistons and components used in Team JDM NHRA Cobra Jet Mustangs making 1200+ HP setting World Record’s a 1/4 mile at a time!


    • Manley H beam Rods w/ ARP 2000 bolts
    • Mahle Forged NHRA spec Pistons
    • Total Seal Custom Ring Package
    • Calico Coated Main Bearings
    • Calico Coated Rod Bearings
    • New Main hardware

    Compliment this kit with a JDM Engineering GT500 O Ringed Oil pump w/ TSS Billet gears pre-installed!!



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    Last edited: Oct 11, 2016
  2. deepblue13

    deepblue13 Active Member Established Member

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    Just what I have been looking for.


    Sent from my iPhone using Tapatalk
     
  3. blueovalkid

    blueovalkid The Snake Pit Established Member

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    Interesting... I didnt think you could rebuild using the spray in liners
     
  4. rotor_powerd

    rotor_powerd Well-Known Member Established Member

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    You can rebuild, as long as a light hone is all that's needed. If it needs a bore you have to sleeve it and your machine shop bill gets very expensive.
     
  5. "The factory cylinder bore spray-in liners in the Aluminum block are very strong but it is a very thin coating which doesn’t allow much room for over boring. Custom Mahle forged pistons designed to be used with the factory bore dimensions for a direct drop in application. For engine blocks that have been run already a .001-.002” hone is acceptable for clearance, any more and the block will require sleeves."
     
  6. GT Premi

    GT Premi Well known member Established Member

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    What kind of revs can this kit support/survive?
     
  7. Some of our Cobra Jet customers are running the same components over 7,500 RPM.....I would recommend a 7,000 RPM max limit for most street cars. But if your racing and running it out the back end like our CJ's do in high gear your talking 7,400-7,500 all day long!

    JimIII
     
  8. GT Premi

    GT Premi Well known member Established Member

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    What would it take to get 9K survivable and repeatable RPM out of an aluminum 5.4? (With the supercharger intact.)
     
  9. jazz

    jazz Member Established Member

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    I just received my kit, along with the jdm super stock cams... Will be posting the results soon... I just cant wait to listen to the sound of the cams lol
     
  10. GT Premi

    GT Premi Well known member Established Member

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    Do you have a kit like that, and how much? Also, do/would you offer a tune for it? I'm sure the ECU would stop the fuel dead long before getting anywhere near 9K.
     

  11. You would not be able to see that RPM with the factory ECU in tact, a stand alone system would be required. The cost difference in the rods is about $1000 more. As far as the valve train components, Springs, TI retainers, and Cams. Then you will need upgraded timing components, we use the Ford GT parts and modifiy them along with a few other trick parts.

    What is your reasoning for wanting to spin the motor that high?? These are big Torque, lower RPM motors your putting massive stress on everything at that RPM.
     
    Last edited: Oct 5, 2016
  12. Glad you got everything Jazz! Let us know if you have any questions and how it goes!
     
  13. GT Premi

    GT Premi Well known member Established Member

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    Honestly? Just to see if it can be done and still be driveable on the street.
     
  14. rotor_powerd

    rotor_powerd Well-Known Member Established Member

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    It can be done but the cost to make the engine both reliable and productive at that RPM is very, very high.
     
  15. GT Premi

    GT Premi Well known member Established Member

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    How "high" are we talking?
     
  16. rotor_powerd

    rotor_powerd Well-Known Member Established Member

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    You're talking a pretty high level build at that point. Lots of porting, custom cams, lightweight valve train, balanced everything, a power adder that is usable at that RPM, standalone EFI, etc. I would set aside $25,000-30,000 minimum to do it right.
     
  17. That's exactly right plus the wear and tear 9,000 RPM would put on the motor alone is something that would require rebuilds after a short while. We rebuild our Cobra Jet motors once a season or two depending on the abuse they take. Now I can say for sure a lot of the components that we inspect after tear down look great and would take more but when we are looking for every thousandths of a second in the 1/4 mile and the budget allows for rebuilds for some of these racers.

    When we put our Super Stock cams in our customers GT500 cars and it extends the RPM range to 7,000 RPM+ most of the time is scares the crap out of them because the car just wants to keep pulling and has so much top end charge. I could not imagine 9,000 RPM!! I think it's pie in the sky really, sounds cool but not very reasonable.
     
  18. GT Premi

    GT Premi Well known member Established Member

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    Isn't the stock rotating assembly good for 7K, though?
     

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