LM7 swap

Discussion in 'High Tech Retrofits' started by BigBlock73, Jan 14, 2020.

  1. bazookatooths

    bazookatooths Member

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    Yes my LS6 manifold came from Dubai , got it cheap but was full of a sand. Had to do a thorough cleaning!! The injectors were all gummed up and half I couldn't get unclogged.
    I did drill and tap the LS6 manifold for the IAT sensor for holley terminator. I would just drill and tap the air intake pipe next time though, I kinda don't like the way it looks and may hurt resale value.

    The LS6 Valley cover required no modifications, probably going replace the U-shaped hose with a catch can later to help keep the intake manifold clean, due to blowby.

    I think I had to heat up and bend the intake on the fuel rail a little bit to clear the truck coils but don't remember.

    I used ACDelco 251-734 LS3/L99 waterpump the Holley one looks great too. You can also use a LS1 waterpump with spacers. If you want the hose outlet on the other side.
    Power Steering pump reused.
    Had to get a new Alternator to fit the bracket I used 105Amp
    I think I used but its been so long I don't remember https://www.amazon.com/Alternator-S...HX9CTAJ4ZNC&psc=1&refRID=C0HCEH4S8HX9CTAJ4ZNC

    LSSimple makes a kit that allows you to use truck alternator
     
    Last edited: Jan 25, 2020
  2. BigBlock73

    BigBlock73 Veteran Member Lifetime Gold Member

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    bazooka
    Where did you get the LS6 valley cover?
    The ACDelco water pump looks to be a good option.
    Do you have any pictures of your engine?

    Badazz
    This is what I'm considering a mid budget project.
    Looking at all the options for the swap,you can get into the high end expenses very quickly.
    Already bought a LS6 intake with injectors,fuel rail,throttle body and bolts.Came with new gaskets as well.
    I've been looking online and will probably be reusing the stock wiring harness that I'll rework and computer reprogrammed.

    Not going to "Hack" anything but have to keep expenses down.
    I have no timeline for completion or horsepower expectations.
    Engine is in my truck,that has a rusted frame,being used for plowing.Will be at least mid April before I can pull the engine to start this project.
    In the meantime I'll be researching and stockpiling parts.

    I appreciate all input.
    Thanks
     
    Last edited: Jan 26, 2020
  3. bazookatooths

    bazookatooths Member

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    Got it either on Amazon or eBay the version with the two knock sensor holes. I stockpiled parts for two years and before I started on mine.
    What's parts do you need pics taken of?
     
  4. BigBlock73

    BigBlock73 Veteran Member Lifetime Gold Member

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    Very kind of you

    Pictures of :
    How you ran the radiator hoses.What radiator you used.
    How you ran the fuel line to the rail
    Air filter
    Computer and wiring

    Thanks
     
  5. badazz81z28

    badazz81z28 Veteran Member

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    You can absolutely throw one together on a budget. The key is to save the money where it makes sense and ease of future upgrades. I personally would have kept the entire engine stock, get the application specific bell-housing and clutch (since those are difficult to do later). You can run truck accessories, relocate the alternator to the pass side, use your stock radiator. Jumping in to change the induction and tunes will ultimately nickel and dime you. If you're committed to swap the intake, injectors etc. now, do it all now (Induction and Exhaust/Headers).
     
  6. BigBlock73

    BigBlock73 Veteran Member Lifetime Gold Member

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    Truck intake won’t fit under the flat hood.
    Will be reusing the clutch as it’s almost new.Only thing that has to be changed to mate the trans and engine is the flywheel.
    The exhaust will be shorty headers into the existing system.
    I’m not worried about the bell housing and the missing bolt. The dowel pins do most of the work.
     
    Last edited: Jan 26, 2020
  7. BigBlock73

    BigBlock73 Veteran Member Lifetime Gold Member

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    I'm sure things will change as my knowledge of what it'll take improves.

    I have a lift and have gotten very good at pulling the trans and reinstalling it.
    Had multiple issues with the trans popping out of gear.
     

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