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Thread: planning a 57 LS6 swap

  1. #21
    Registered Member WagonCrazy's Avatar
    Join Date
    Mar 2012

    Member #:530
    Location
    Santa Clarita, CA
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    1,793
    What abot firewall modification to get that T56 to fit under there? Have you done a dry test fit yet?
    1957 Nomad- LS1/T56 on C4 chassis
    1959 Fleetside Apache 1/2 ton, shortbed, big window, 327ci.

  2. #22
    Registered Member
    Join Date
    Feb 2020

    Member #:4316
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    I've been quietly plugging away at this project for the last 8-9 months in my spare time. It was my first LS swap so I don't have much to compare it to. There was a few things that were supposed to fit, that didnt. I had some problems to solve along the way, but I figured it out. Had to try a couple sets of headers to get around the new power steering box I installed. CPP 600. That took a rag joint that was pretty hard to find to fit my current steering column. I had to fabricate a mount for a 2000 camaro clutch master cylinder. custom made some fuel lines, welded new ears for the transmission crossmember. I just tackled one problem at a time. I used adjustable motor mounts to help with alignment. Installed a new tank with 255lph pump, used a stock 0411 PCM with BP Automotive stand alone harness. Rebuilt the T56 with carbon blockers, new synchro sleeves, brass fork pads etc. had to move the battery to the trunk, used a power distribution block up front. one major issue I had was it wouldnt start after everything was wired up. I checked every thread i could to chase the problem. There was a no spark situation. I had 8 brand new coils so i never suspected them. I replaced the crank and cam sensor, checked all my grounds many times. tested the PCM, nothing looked wrong.BUT I had ordered an aftermarket coil harness, because no local junk yard had an OEM one. turns out the coil harness I bought was wired incorrectly for the LS6 coils. I repinned it and it still didnt start. it actually fried all 8 coils being wired wrong. so it took many hours to figure out the coils were bad, I ended up using a scope to see signal coming from the PCM and that told me it was the coils. anyway all set now, running and driving. just need to drop it off for a final tune.


    147898385_10164853540280201_5843639743576024845_n.jpg148620606_10164853540270201_5257380182420435005_n.jpg167107655_10165067068040201_3272557189119103496_n.jpg167539339_10165067068035201_6734103455716561746_n.jpg

  3. #23

  4. #24

  5. #25
    Registered Member
    Join Date
    Feb 2020

    Member #:4316
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    16
    hopefully this works, heres video of it idling for the first time and when the exhaust was completed. if you click the link, then the thumbnail youll be able to play it without downloading.

    https://share.icloud.com/photos/04Wl...WO-Kw#Plymouth



    https://share.icloud.com/photos/0Vd_...aGi8g#Plymouth

  6. #26
    Registered Member Belair-o's Avatar
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    Jun 2013

    Member #:1723
    Location
    Franktown, CO
    Posts
    597
    Very nice progress! Good job!

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