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Cadillac XLR Forum Discussion, LS7 swap. in Past Cadillac Vehicle Discussion; Even i'm facing same kind of issue Could any one let me know how to measure 240 ft-lbs on the ...
  1. #16
    nikiej is offline Cadillac Owners Member
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    Re: LS7 swap.

    Even i'm facing same kind of issue

    Could any one let me know how to measure 240 ft-lbs on the balance bolt while swapping. Is there any need to align gasket cover?


  2. #17
    shawn.foist is offline Cadillac Owners Member
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    Re: LS7 swap.

    I understand what CC is saying, but I have one thought to interject into his assertion. Aftermarket equipment that is developed by third parties for a multitude of audiences, in my opinion, is completely different from transferring components from what is essentially the same vehicle. No I am not an expert on the XLR, but I have some very good knowledge of late model vehicle components and their respective interactions. In the case of the sound system the different IO operations bridge several different systems, steering wheel controls, HUD etc. If the target peice was not engineered with this consideration in mind then one could expect to have some serious issues to overcome. In the case of the XLR / Corvette they are essentially the same vehicle. Moving one component from one to another should not present that type of issue. I understand that it would be a little more complex than a bolt on operation, but I truly believe it doable with relatively little pain and lots of money.

  3. #18
    GizmoQ's Avatar
    GizmoQ is offline The Last Good Gremlin
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    Re: LS7 swap.

    Quote Originally Posted by shawn.foist View Post
    .... but I truly believe it doable with relatively little pain and lots of money.
    Lots and lots and lots
    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 510RWHP and 546TQ so far...final goal 575/550

    ELWOOD - "Corvette in a Tuxedo ... with a Jet Pack"



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  4. #19
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Re: LS7 swap.

    We will get this done

  5. #20
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    Re: LS7 swap.

    I will get you all of the you need and we will get this done ASAP

  6. #21
    RippyPartsDept's Avatar
    RippyPartsDept is offline Cadillac Owners 10000+ Posts
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    Re: LS7 swap.

    great

  7. #22
    ccclarke's Avatar
    ccclarke is online now Cadillac Owners Connoisseur
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    Re: LS7 swap.

    Quote Originally Posted by pcmcalibrators View Post
    i will get you all of the you need and we will get this done asap
    ?????

    Cc

  8. #23
    ND-54 is offline Cadillac Owners Member
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    Re: LS7 swap.

    If you really like building a car on your own, why not buy a used XLR-V, strip it clean [engine, transmission, electronics, et al] and start from scratch. Then you will know for sure what you have and how it works. Might be more fun.

  9. #24
    loscolonis is offline Cadillac Owners Member
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    Re: LS7 swap.

    So, did you put an LS motor in the XLR or not? I own a 2005 XLR and would like to get more hp with an LS rather than a Northstar. I talked with a Cadillac dealer and they will not take this task on. I live in Virginia Beach and am seriously thinking of going to Fantomworks and talking with them about this project. If too costly, then, I will sell the XLR and search for a CTS-V Coupe to satisfy my hp need.

  10. #25
    ccclarke's Avatar
    ccclarke is online now Cadillac Owners Connoisseur
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    Re: LS7 swap.

    The four-plus years this thread has languished silently might be a pretty good answer to your question.

    The fact that a GM dealership won't Frankenstein an XLR is hardly surprising.

    Several single-digit posters have generated all motion and no movement regarding this (interesting) topic. They get an XLR, become giddy, join the forums, verbally ejaculate, become rhetorically flaccid, then dissapear.

    Anyone can talk; Executing a challenging LS engine swap takes a little more effort than typing.

    I've seen one example of an XLR that was gutted and turned into a dragster, (it was subsequently destroyed) but nobody has yet to post details and pics of an LS engine swap. For the time being, an LS-equipped XLR is like Nessie, Bigfoot, or UFOs. I can accept their possibility, but not their existence without definitive proof. At least there are grainy pictures of the former, while none of the latter. . .

    I'd love to see it be accomplished, but when it's all said and done, a modified XLR-V is the most practical, cost-effective method to keep the car luxurious and fast, while retaining full functionality of the integrated systems that make an XLR so cool.

    Knock yourself out. Expend resources to boost our ailing economy. If you can make it happen, you will become an XLR legend. The world watches . . . And waits. Will you be a single-digit poster, or Multi-digit boaster?! Time will tell. Good luck!

    On a someone-finally-pulled-it-off note, another owner has successfully modified the infotainment system to today's standards. Major kudos, mad props, and all that congratulatory stuff.

    CC

  11. #26
    loscolonis is offline Cadillac Owners Member
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    Re: LS7 swap.

    cclarke,

    Thanks for the response! If it is impossible then I am on to a CTS-V.

  12. #27
    ccclarke's Avatar
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    Re: LS7 swap.

    It isn't impossible, just impractical financially, when you can purchase a V of any model that goes fast and has Cadillac luxury without the inevitable integration headaches.

    I hope you find a V that gives you the "Tesla Acceleration Grin." I drove a friend's the other night and it was most impressive. The acceleration without any exhaust roar makes it seem even faster.

    Good luck with your quest.

    CC

  13. #28
    loscolonis is offline Cadillac Owners Member
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    Re: LS7 swap.

    ccclarke,

    Since my last post, I have exhausted my research on this topic and this is what I found out: 1. Yes, an LS- motor can replace a Northstar in an XLR; 2. Since the LS ECM will not talk to the other controlling modules in the car you will lose the following: a. Cruise Control; b. Traction control; Body roll control module won't talk to the LS ECM so if Magnetic Ride equipped, there may be an issue. So, the trade off for more power from an LS motor, takes away all the 'creature' features that make the XLR a nice car to drive. My friend obtained this information from a GM Engineer and a Detroit Speed Engineer. Their advice as yours was if I wanted a Cadillac product and more HP, I should think about moving to a CTS-V and they recommended a Coupe. So, after owning a 2005 XLR (Xenon Blue with Champagne Interior) from 2007 to 2015 and 25,352 miles on it at time of trade-in, I graduated to a 2013 Thunder Gray CTS-V Coupe with 3,289 miles. It is quieter on the Interstate and the ride is not as stiff as the run flats on the XLR. Thanks again for your time and advice. I hope everyone that wants to do this type of swap will have the good fortune to find out the things I did. Since the original posting is so old, not many will want to read it.

    Thanks,
    Los Colonis in Virginia Beach.

  14. #29
    ccclarke's Avatar
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    Re: LS7 swap.

    Congrats on the new CTS-V! That's a great-looking car in that color, with power to spare. The run-flats have always been awarded complaints for their stiff ride.

    Thanks for posting back!

    CC

  15. #30
    Ls3xlr is offline Cadillac Owners Member
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    I know this is an old thread but we swapped a 2007 XLR v
    With a supercharged ls3 if anyone is interstellar and everything going works.....

    Aperntly my pics are to big but
    We posted a video on YouTube
    Search for ls3 XLR
    Posted by Sherri and kyle

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