Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

TBI Adapter plate - Made it today on break! pics

Discussion in 'The Garage' started by bigburban383, Jan 5, 2004.

  1. bigburban383

    bigburban383 1/2 ton status

    Joined:
    Dec 30, 2003
    Posts:
    1,242
    Likes Received:
    0
    Location:
    Michigan, Royal Oak
    I made this today on break. Well, HillBilly programmed the Bridgeport to cut the ports, but I did everything else /forums/images/graemlins/thumb.gif

    This is the top, its aluminum so I helicoiled the TBI threads[​IMG]
    Notice the chamfer on the ports, that well help prevent the venturi effect[​IMG]
    Fully assembled
    [​IMG]
     
  2. zcarczar

    zcarczar 1/2 ton status

    Joined:
    Feb 10, 2002
    Posts:
    2,495
    Likes Received:
    0
    Location:
    Apple Valley California
    Very nice, How thick is the plate?
     
  3. bigburban383

    bigburban383 1/2 ton status

    Joined:
    Dec 30, 2003
    Posts:
    1,242
    Likes Received:
    0
    Location:
    Michigan, Royal Oak
    Its only 1/2 inch. It was free so im not complaining, but I was searching for the 3/4 inch. It would then double as a TBI spacer and give me some more torque. 1/2 inch will do anyways.
     
  4. TJS

    TJS 1/2 ton status

    Joined:
    Nov 13, 2001
    Posts:
    179
    Likes Received:
    0
    Location:
    Westport,CT
    What intake is that. Is it a single plane ?. Looks like an e-bock performer dual plane to me. I have heard of people doing this on a dual planes and have had some issues.
    Looks like you put the holes right in the middle of the dual plane intake. I am also making one for my Vortec intake e-brock RPM manifold which is also a dual plane intake. I think I might set the holes back a little and mill out the center divider on my intake to prevent starvation. I have a drawing already all I need is some time on my mill to get it done. I wish I had a CNC mill..hehehe.
    T.J.
    www.tjsperformance.com
     
  5. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Painless wiring has one available that I was going to buy. I honestly hope that works out for me, I don't want to drill an intake or use the centerbolt heads.
     
  6. bigburban383

    bigburban383 1/2 ton status

    Joined:
    Dec 30, 2003
    Posts:
    1,242
    Likes Received:
    0
    Location:
    Michigan, Royal Oak
    [ QUOTE ]
    What intake is that. Is it a single plane ?. Looks like an e-bock performer dual plane to me. I have heard of people doing this on a dual planes and have had some issues.
    Looks like you put the holes right in the middle of the dual plane intake. I am also making one for my Vortec intake e-brock RPM manifold which is also a dual plane intake. I think I might set the holes back a little and mill out the center divider on my intake to prevent starvation. I have a drawing already all I need is some time on my mill to get it done. I wish I had a CNC mill..hehehe.
    T.J.
    www.tjsperformance.com

    [/ QUOTE ]

    Yes its a edlebrock performer dual plane. The TBI bolt holes are acctually off set so the bolts dont hit the center divider. So what problems did people have? Was it a engine running issue or was it a design issue?
     
  7. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    Ohhh...SHould I not use my 87-89 454 Preheat adaptor that is a direct bolt on for a GM Spread bore used from the 60's to the late 80's?


    hehehe I don't think anybody knows about this little Gem.
    Nice machine work though.
     
  8. GM Man

    GM Man 1/2 ton status

    Joined:
    Jan 12, 2003
    Posts:
    549
    Likes Received:
    0
    Location:
    Denver CO
    [ QUOTE ]
    Ohhh...SHould I not use my 87-89 454 Preheat adaptor that is a direct bolt on for a GM Spread bore used from the 60's to the late 80's?


    hehehe I don't think anybody knows about this little Gem.
    Nice machine work though.

    [/ QUOTE ]

    So what is this mystery Preheat adaptor that your talking about?? Do you have a part # for it? Pic??
     
  9. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    [​IMG]
    [​IMG]
    [​IMG]

    I need to double check the part number. Didn't realize it didn't come out clear. I think its 10086789.

    The TBI unit is LARGER then a 350 TBI My understanding is this was only used on 87-89 N code 454's. In 90 the 454 went to a simular style intake like a SBC had with the built in boss for the 2bbl TBI.

    The adaptor was plumbed into the heater hose to preheat in the cold. I have a 88 454 sub with the same set up and never had a issue with it freeszing up without it hooked up as long as I was running a stock air cleaner with preheat off the manifold.

    You must also use the factory gasket (not pictured) $5 from the dealer. It will work fine on a Spread bore intake. /forums/images/graemlins/thinking.gif
     
  10. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    I wonder if it'd seal on an Edelbrock intake.
     
  11. TJS

    TJS 1/2 ton status

    Joined:
    Nov 13, 2001
    Posts:
    179
    Likes Received:
    0
    Location:
    Westport,CT
    [ QUOTE ]
    [ QUOTE ]
    What intake is that. Is it a single plane ?. Looks like an e-bock performer dual plane to me. I have heard of people doing this on a dual planes and have had some issues.
    Looks like you put the holes right in the middle of the dual plane intake. I am also making one for my Vortec intake e-brock RPM manifold which is also a dual plane intake. I think I might set the holes back a little and mill out the center divider on my intake to prevent starvation. I have a drawing already all I need is some time on my mill to get it done. I wish I had a CNC mill..hehehe.
    T.J.
    www.tjsperformance.com

    [/ QUOTE ]

    Yes its a edlebrock performer dual plane. The TBI bolt holes are acctually off set so the bolts dont hit the center divider. So what problems did people have? Was it a engine running issue or was it a design issue?

    [/ QUOTE ]


    People are having running and driveability issues.
    T.J.
     
  12. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Hey Travis, if ya need one of those, I just happen to have one "in stock". /forums/images/graemlins/wink.gif
     
  13. backyardbuilt

    backyardbuilt 1/2 ton status

    Joined:
    May 28, 2002
    Posts:
    1,301
    Likes Received:
    0
    Location:
    Olathe, Kansas
    The 454 one if so how much. Just got all the tbi stuff and need an adapter for mine.

    By the way nice looking adapter
     
  14. bigburban383

    bigburban383 1/2 ton status

    Joined:
    Dec 30, 2003
    Posts:
    1,242
    Likes Received:
    0
    Location:
    Michigan, Royal Oak
    [ QUOTE ]
    [ QUOTE ]
    [ QUOTE ]
    What intake is that. Is it a single plane ?. Looks like an e-bock performer dual plane to me. I have heard of people doing this on a dual planes and have had some issues.
    Looks like you put the holes right in the middle of the dual plane intake. I am also making one for my Vortec intake e-brock RPM manifold which is also a dual plane intake. I think I might set the holes back a little and mill out the center divider on my intake to prevent starvation. I have a drawing already all I need is some time on my mill to get it done. I wish I had a CNC mill..hehehe.
    T.J.
    www.tjsperformance.com

    [/ QUOTE ]

    Yes its a edlebrock performer dual plane. The TBI bolt holes are acctually off set so the bolts dont hit the center divider. So what problems did people have? Was it a engine running issue or was it a design issue?

    [/ QUOTE ]


    People are having running and driveability issues.
    T.J.

    [/ QUOTE ]

    That really sucks. Do you think a 454 TBI unit could remedy that problem?
     
  15. Mudzer

    Mudzer 1/2 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    3,639
    Likes Received:
    0
    Location:
    Missouri
    I have Holley Pro-Jection on an Edelbrock intake with similar Holley adaptor as the one you built. I do not have driveability issues with mine.
     
  16. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Yep, it's from an '89 or '90 TBI 454. $20 plus shipping and it's yours. /forums/images/graemlins/cool.gif
     
  17. TJS

    TJS 1/2 ton status

    Joined:
    Nov 13, 2001
    Posts:
    179
    Likes Received:
    0
    Location:
    Westport,CT
    Bigburb,
    Have you used it yet. If so how is it. Also do you happen to have a dimensional drawing of that. I have a drawing of a carb adapter all I need are the rise/run dimensions of the bolt spacing for the TBI and the spacing and size of the holes. If not I just need to spend some time with a TBI and a caliper.
    Thanks
    T.J.
     
  18. bigburban383

    bigburban383 1/2 ton status

    Joined:
    Dec 30, 2003
    Posts:
    1,242
    Likes Received:
    0
    Location:
    Michigan, Royal Oak
    [ QUOTE ]
    Bigburb,
    Have you used it yet. If so how is it. Also do you happen to have a dimensional drawing of that. I have a drawing of a carb adapter all I need are the rise/run dimensions of the bolt spacing for the TBI and the spacing and size of the holes. If not I just need to spend some time with a TBI and a caliper.
    Thanks
    T.J.

    [/ QUOTE ]

    I'll tell ya how I did it. Cut a piece of square cardboard put a tiny bit of oil around the bolt holes on the intake and set the cardboard on that. That left a oil stain with the hole in the middle and I marketed it. The I took the TBI gasket and centered it on the cardboard, marked the holes and the ports. Then you reference the cardboard to your plate. I cut the intake holes bigger to compensate for error, but make sure the TBI screw holes are perfect.
     
  19. 88Silverado

    88Silverado 1/2 ton status

    Joined:
    Mar 13, 2003
    Posts:
    2,664
    Likes Received:
    0
    Location:
    Quartz Hill, So. Cal
    Several companies make TBI to Carb manifold adapters. Holley and TurboCity just to name a few.
     
  20. backyardbuilt

    backyardbuilt 1/2 ton status

    Joined:
    May 28, 2002
    Posts:
    1,301
    Likes Received:
    0
    Location:
    Olathe, Kansas
    I know for 50$ or more but I like to save where I can.

    Harry I'll pm ya.
     

Share This Page