Junk Yard 5.3L LS/Vortec Build
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Junk Yard 5.3L LS/Vortec Build

  1. #1
    Or Seth, either one Budweiser's Avatar
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    Default Twin Turbo 5.3L LS/Vortec Build

    Going in a 1966 Hallett V-drive. Pulled the engine this past Friday out of a 1999 pick-up. Commencing with tear down and cleaning.


    Get it running, then paint.
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    Last edited by Budweiser; 10-20-2017 at 05:18 AM.

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  3. #2
    Senior Member Hass828's Avatar
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    Good luck with this Seth!! Looking forward to progress pics
    "if we keep doing it the same way we always do..we will always get the same results"
    H8-2-W8
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  4. #3
    Or Seth, either one Budweiser's Avatar
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    Quote Originally Posted by Hass828 View Post
    Good luck with this Seth!! Looking forward to progress pics
    Thanks Hass. Gonna try to update with pics daily.

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  6. #4
    Or Seth, either one Budweiser's Avatar
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    Got the heads off and pistons out. Everything looks as, or better than, expected except that rod bearing and journal #1 have a minor scratch. Just barely catches a fingernail on the journal. Think it'll be alright, but I'll give it a closer look tomorrow. The rings all move freely and aren't gummed up and faces all have the expected amount of carbon build-up. Lot's of build-up in the intake ports, both in the head and manifold... Ordered valve seals.

    I've never been in one of these engines before this. It's a real pleasant engine to work with. All the bolts come out nice and easy, the gaskets come off so nice and clean that they're virtually reusable. No scraping, no prying, no busted knuckles. The parts and machining quality over the older factory small block stuff is a very apparent improvement.

    Hopefully get the heads apart tomorrow.


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    Yes. I'm tearing it down in the filthy bed of a pickup truck.
    Last edited by Budweiser; 04-27-2015 at 09:22 AM.

  7. #5
    Or Seth, either one Budweiser's Avatar
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    A little bit about the plan for this engine... EFI, twin turbo, big intercooler. I've collected a lot of parts over the past year, but from here on out it's a shoestring budget. A BIG thank you to Impatient1 for all of his input and guidance on parts selection.

    70mm Turbos 0.81 AR turbine housing
    Cast iron center rise manifolds
    Microsquirt EFI ECU - Super compact (wallet size), boiled down bare bones unit. Batch fire fuel and wasted spark ignition using stock coils.
    Stock intake
    80lb/hr Injectors
    Cam driven fuel pump
    Probably an LS9 cam for the time being
    Maybe vacuum pump (OEM Smog pump)

    Only looking for an 80-90 mph boat and think this should get me there.


    I have a lot of book knowledge about engines, but hands on assembly experience pales in comparison. I'm confident I'll do fine, but if you guys have any input along the way, or see a mistake, I'd appreciate the heads up.
    Last edited by Budweiser; 04-23-2015 at 07:18 AM.

  8. #6
    a.k.a. "Mean Pair" Nice Pair's Avatar
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    Shouldn't take more than 2 weeks.
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  9. #7
    Or Seth, either one Budweiser's Avatar
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    Quote Originally Posted by Nice Pair View Post
    Shouldn't take more than 2 weeks.
    Sounds about right.

  10. #8
    Senior Member Double A's Avatar
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    That is going to be a neat combo..boat/engine. Thanks for posting it up!

  11. #9
    Or Seth, either one Budweiser's Avatar
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    Quote Originally Posted by Double A View Post
    That is going to be a neat combo..boat/engine. Thanks for posting it up!
    Yeah, I think so too. Looking forward to a relatively quiet, reliable, fuel efficient, river cruis'n flat with a little go-go now and then.

    Thanks for the mention Double A
    Last edited by Budweiser; 04-24-2015 at 07:06 PM.

  12. #10
    Or Seth, either one Budweiser's Avatar
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    Heads are apart. Just have to pull the valve seals and clean 'em up.

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    Put a piston in some Chemdip last night and it cleaned up pretty nice with almost zero scrubbing.

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    Just dropped the valves in the Chemdip.

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    Last edited by Budweiser; 04-27-2015 at 12:33 PM.

  13. #11
    Member sideways_s13's Avatar
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    I've been running my 01 5.3L hard now for 4 years. Tough little motors. You'll like it
    '73 Hondo Jet, 5.3LS, Borg Warner S475 "MACHINIST MAKE THE WORLD GO ROUND"

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    Quote Originally Posted by Budweiser View Post
    Heads are apart. Just have to pull the valve seals and clean 'em up.








    Put a piston in some Chemdip last night cleaned up pretty nice with almost zero scrubbing.






    Just dropped the valves in the Chemdip.

    This is all new to me..are those what they call Bee Hive springs?

  15. #13
    mo balls than $cents$ IMPATIENT 1's Avatar
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    Elgin makes a bbc beehive that works great on ls stock heads and ls7 lifters even on a xr aggressive lobe

    Dare to be different, if it turns out great you can claim you planned it that way.

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  16. #14
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    Quote Originally Posted by Gone Green View Post
    This is all new to me..are those what they call Bee Hive springs?
    Yeah, I think so. Hadn't seen any in person before and had the same thought when I dug into this. The retainers are pretty small compared to other stuff I've seen. I see performance benefit, but I'd wager GM saw cost benefit. Maybe not...

    Here's a couple, upside down and right side up..

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    Last edited by Budweiser; 04-27-2015 at 09:27 AM.

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