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Thread: WTB: GMPP TBI / Vortec Intake Manifold

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  1. #1
    Fuel Injected!
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    Sorry, I can't figure out why the spacing keeps disappearing after every sentence? It looks a mess....

    Figured it out, for some reason I needed to go into general settings and change the message editor interface!
    Last edited by Kitch; 01-15-2017 at 11:23 PM.

  2. #2
    Fuel Injected!
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    Honestly I did a different approach on the last Vortec I built for a carb application. I have had numerous OEM Vortec blocks that had the bypass hole in the block cast and machined into it. Only the matching opening in the head surface was cast over. I drilled the Vortec head for the bypass passageway. Internal bypass with no external plumbing or drilled thermostats.

  3. #3
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    Thanks Fast, I figured that drilling a hole in the head for an internal bypass should work but in the hundreds of different posts I read most people were running external bypasses or drilling holes in their thermostats. Oddly I only found one post were someone mentioned making it internal but they didn't give much detail.

  4. #4
    Fuel Injected!
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    With the GMPP TBI/Vortec intake manifold I won't be running an external EGR connection and I'll be blocking off the EGR port on the manifold, does anyone know where you can buy a threaded fitting to block of the EGR entry into the manifold? I was also thinking of plugging the two EGR holes in the plenum floor, to me it looks like fuel could enter the redundant EGR cavity under the manifold?

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  6. #6
    Fuel Injected!
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    Hi Hog,

    Thanks for the reply.
    I was going to make my own block off plate, I actually needed the pipe hole plug for the intake manifold.
    Your part numbers helped me track down the part I needed http://www.jegs.com/i/Chevrolet-Perf...56596/10002/-1
    Now I just need to find one from somewhere were the freight is less than $43...

    Cheers

    Andrew

  7. #7
    Fuel Injected!
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    Quote Originally Posted by Kitch View Post
    Hi Hog,Thanks for the reply. I was going to make my own block off plate, I actually needed the pipe hole plug for the intake manifold. Your part numbers helped me track down the part I needed http://www.jegs.com/i/Chevrolet-Perf...56596/10002/-1 Now I just need to find one from somewhere were the freight is less than $43...CheersAndrew
    It is actually a hydraulic fitting size. Might be able to track down one local. I tracked down a cap for the EGR port on my Thorley headers when I converted to the Marine intake. Been a while but I want to say it is a JIC fitting.

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