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  1. #1
    Fuel Injected!
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    Started another swap

    My brother and I are building up a 1987 G20 Van for him. The little 104K mile 305 TBI had to go. Stock it was pretty gutless. It is getting a 2007 LQ4 6.0L complete with DBW swapped into it. It may end up getting a 4L80E in place of the TH400. The Van currently has a 3.08 rear end so the overdrive is not going to be hugely important at the moment but might be nice on long trips.





    My super low dollar LQ4 with 90K from a 2006 2500HD cab & chassis truck. I bought it from a friend of a friend for parts for another 6.0L. He thought it had a bent crank because of an almost imperceptible crank pulley wobble. Turns out GM even has a TSB and a brand new 6.0L van had 3x the wobble this one does. Going to run it as is. This was startup before it came out of the wrecked truck. One of the bosses for the low mount compressor was damaged as well but I have no plans for a low mounted a/c compressor. Will use Lextech brackets and a L31 Vortec compressor.

    https://www.youtube.com/watch?v=8wGkuHNC6nw




    I am hoping I can use the 2006 Hemi Ram Accelerator pedal I had laying around for this. It fits perfectly on a GMT800 truck pedal bracket and plugs into the GM connector. After removing the factory G-van accelerator and bracket the GMT800 bracket bolted right to the firewall with 3 self tapping flange head bolts. With some repinning of the connector the electronic function of the unit seems to be the same as tested with resistance values on my trusty old Fluke. Guess I will know for sure when I get the engine installed, plumbed, wired and fired up.

    Last edited by Fast355; 07-10-2017 at 05:45 AM.

  2. #2
    Fuel Injected!
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    The 6.0L is in.






  3. #3
    Fuel Injected! kacy's Avatar
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    Quote Originally Posted by Fast355 View Post
    The 6.0L is in.





    Thanks to photobucket, most build threads no longer have pictures in them. Please use a different photo hosting service unless you want to pay photobuckets fees.

  4. #4
    Fuel Injected!
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    Fast, can you clear out your PM's? I have a question for you but does not relate to this thread. Thanks.

  5. #5
    Fuel Injected!
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    Sounds like a good swap. I'm still considering doing something like that with my van and ditching the outdated TBI system. How hard of a swap was it? Pulling van motors is a pita. Did you go out the front or out the bottom?

    By the way, the pictures don't work.
    1994 Chevy G30 Van "Big Blue"
    5.7 TBI, Vortec Heads, Summit Intake, Thorley Short Headers with dual 2.5" exhaust, 4L80E transmission

  6. #6
    Fuel Injected!
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    Quote Originally Posted by wanderingturtle View Post
    Sounds like a good swap. I'm still considering doing something like that with my van and ditching the outdated TBI system. How hard of a swap was it? Pulling van motors is a pita. Did you go out the front or out the bottom?

    By the way, the pictures don't work.
    I refuse to pay photobuckets fees so the pictures won't be back.

    The 6.0L engine and 4L80E are both sitting in it. I have it mostly mocked up. I have to pull the engine swap the cam and heads as well as timing cover then finish the plumbing and wiring.

    Its not too hard of a swap. I actually prefer working on the vans to most cars. Working slow, I can get the engine out of one in about 2-3 hours out of the front.

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