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anyone ever make a TBI intake fit a non TBI engine? *NEW Q *

Discussion in 'The Garage' started by uglychevyZZ4, Apr 14, 2004.

  1. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    i have heard that they can be adjusted to fit??
     
  2. heavy4x4

    heavy4x4 1/2 ton status

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    Re: will 1990 sbc 350 intake bolt on a 77-80\'s block ??

    The '90 intake will be for TBI heads. Some of the bolt holes (can't remember which ones...I think all the ones except for the corners) will be at the wrong angle for earlier-year heads.
    You'd have to re-drill the wrong holes at the proper angle and then machine the surface where the bolt head touches to be perpendiclar to the hole (or use an angled washer).
     
  3. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Re: will 1990 sbc 350 intake bolt on a 77-80\'s block ??

    Grrrrr... the head bolts have to be chenged?
     
  4. GMCLegacy

    GMCLegacy 1/2 ton status

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    Re: will 1990 sbc 350 intake bolt on a 77-80\'s block ??

    you may be able to modify the intake to fit. it is the center pair of holes on both sides of the intake that will be missalinged.

    most people (including myself) do the opposite, and fit an old dirty cast iron intake on a TBI block. good luck
     
  5. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Re: will 1990 sbc 350 intake bolt on a 77-80\'s block ??

    I changed to a more appropriate name, maybe someone has done this. I hate quadrajets, period! I know tBi inside n out and want the non-boggin game on, besides, I can tweek TBI to be pretty gnarly and dont wanna change blocks if possible.
     
  6. heavy4x4

    heavy4x4 1/2 ton status

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    Re: will 1990 sbc 350 intake bolt on a 77-80\'s block ??

    Use TBI heads on your 77-80 block and the intake will bolt up fine.

    Or, better yet (maybe) is to use the old heads and old intake and make an adaptor plate to bolt the TBI onto the quadrajet intake.
    bigburban383 (or something like that) made one of these...maybe he'll chime in to tell you how it has worked so far.
     
  7. bigburban383

    bigburban383 1/2 ton status

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    Ditch the OEM intake and buy an edlebrock performer intake (not RPM) $110. Then buy an adapter plate or make one like I did.

    [​IMG]
    [​IMG]
    [​IMG]
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    It's the two center bolt holes that don't line up. They are vertical. The other 8 are at the same angle, so thats no problem.

    I'm sure you could grind the intake to the proper angle (or have a machine shop do it so you know it is flat) but I would have to imagine an adapter is just an easier way to go, all the way around, except of course swapping heads with the intake.

    Since the later heads are higher compression anyways (if talking late 70's-mid 80's SBC heads on yours now) swapping them with the intake might be your best bet.
     
  9. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    [ QUOTE ]
    Ditch the OEM intake and buy an edlebrock performer intake (not RPM) $110. Then buy an adapter plate or make one like I did.

    [/ QUOTE ]

    That is very pretty piece there, good job. That idea sounds good. Would a TBI unit clear an EGR on an old intake (3 mount holes triangle base) if I wanted to do injection in the future on and older GM intake with EGR or on a Performer with EGR ? I know when I ran a borrowed Edelbrock carb for a few weeks that my EGR hit the edge of that Carb , and curious if TBI would hit also /forums/images/graemlins/k5.gif
     
  10. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    how does it work? awsomwe! looks like it also works as a good fuel heat shield /forums/images/graemlins/thumb.gif ignore th epm i sent, i found you /forums/images/graemlins/woot.gif
     
  11. bleedchevy

    bleedchevy Registered Member

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    i ground out the four center holes on the tbi intake to fit on the older 70'ish style heads then filled the gaps with gasket sealent, works fairly well. the other option would to get a newer beter flowin aftermarket intake with an adapter plate.
     
  12. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    so are the adapter holes just sitting over the primary holes in the intake? how does that work on a carb intake, ok? is it a dual plane or open plane?
     
  13. K5 NUTT

    K5 NUTT 1/2 ton status

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    Just modify the 4 center bolt holes...works just fine. My 79 has been running that way for over 3 years without a hitch. Have a spare manifold with no home..allready modified and ready to go..the 400 it was on died so i built an 87 up block for the chalet this time.

    DW
     
  14. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    got any pics of the mod up close? you used the stock tbi manifold?
     
  15. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Re: anyone ever make a TBI intake fit a non TBI engine?

    [ QUOTE ]
    got any pics of the mod up close? you used the stock tbi manifold?

    [/ QUOTE ] /forums/images/graemlins/dunno.gif /forums/images/graemlins/dunno.gif
     
  16. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    maybe a diff. routte, will a vette TPI 305 bolt to my sm465, and flywheel?
     
  17. dyeager535

    dyeager535 1 ton status Premium Member

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    What year?

    Not sure when Vette's first got TPI, but I know Camaro's it was '85. After that it would be new flywheel time, since '86-up was one piece rear main seal, which is a definite improvement IMO.

    Thats about the extent of hardware issues I can think of off the top of my head, wiring is a whole different ballgame.
     
  18. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    oops i meant " REMOVED FROM 87 CHEVY IROC CAMARO "

    it does have the harness, TG! is tpi way harder? so there is a flywheel to fit that with my 465?
     
  19. dyeager535

    dyeager535 1 ton status Premium Member

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    Yes 465's were used with the one piece rear main motors, and they are interchangeable with the NV4500 flywheel IIRC. (should be, Vortec's were pretty much the same engine)

    If it was a manual Camaro, then no issues with the PROM if the engine is transplanted into the truck. Key to keeping the swaps "simple" is to run all the stuff out of the car. If the engine thinks its in the car, it will run like it was in the car, and thats what you want.

    I wouldn't say TPI is "way harder", it just has more things to it. Of course, the gains are exponential. /forums/images/graemlins/smile.gif Once you understand the system it's not real complex...lots of wires, but sit down with a wiring manual, and you'll see it's not THAT bad.
     
  20. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    So if I get it you'll come down and help me wire & FIRE /forums/images/graemlins/peace.gif /forums/images/graemlins/peace.gif for free BEER and food of course /forums/images/graemlins/thumb.gif
     

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