TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

TWO TBI's ON DAUL QUAD MAN W/ADAPTERS?

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Old Aug 18, 2002 | 01:59 AM
  #1  
DEATH88305's Avatar
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From: HUMBOLDT
Car: 1988 IROC CAMARO
Engine: 5.0 F.I.
Transmission: 700 R 4
TWO TBI's ON DAUL QUAD MAN W/ADAPTERS?

JUST SEEIN IF ANY BODY HAS SOME INPUT ON THIS IDEA, RUNNING TWO TBI ASSEMBLYS OFF A 305 IN PARALELL ON A DAUL QUAD MANIFLOD WITH THE 4BBL TO TBI ADDAPTERS ON MY 305......... JUST A CRAZY IDEA IM WONDERING IF IT COULD BE ACCOMPLISHED, CAUSE IF SO IM DOING IT, UNTILL MY 383 STROKER IS FINISHED, AND THAT WILL BE A WHILE, THEN WHEN TAHT MOTORS FINISHED I PLAN ON RUNNING A HILBORN MECHANICAL INJECTION, BASICALLY A OUTLAW SPRINT CAR ENGINE TAMED A LIL FOR THE STREET...... LATE.
Attached Thumbnails TWO TBI's ON DAUL QUAD MAN W/ADAPTERS?-deathgrindersride1.jpg  
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Old Aug 18, 2002 | 08:18 AM
  #2  
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From: central ny
i was wondering the same question but thinking a small blower underneath the two
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Old Aug 18, 2002 | 12:22 PM
  #3  
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From: East Los
Class is in session...where's the teach man...

LOL BIGTIME! That makes three of us cuz I was thinking the same thing. I know I can get a hold of a dual 4 barrel manifold (260 L6) and I was thinking it would be kill to run two 560CFM TBI's if I ever bump up the stock compression.....

Wonder if synchronizing both will be tough?

I'm with you dudes man....CHEVYTOWN

Last edited by CHEVYTOWN; Aug 18, 2002 at 12:25 PM.
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Old Aug 18, 2002 | 03:14 PM
  #4  
r90camarors's Avatar
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From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
This topic has been covered in depth before.....so ya know what I'm going to say.......SEARCH........ Anyways, imo, the only reason you would need that much air and fuel going into the 305 is, 1: You have the monster of all monster 305s, or 2: you've got a blower like blue69 suggested. Either way you're talking $$$. I personally am thinking ZZ4....355hp....405lbs/tq. I'm thinking of throwing some 90pph injectors on my holley 670, then lots of prom tuning and seeing where that gets me. That's way down the road though
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Old Aug 18, 2002 | 10:21 PM
  #5  
iroc22's Avatar
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From: Surrey, BC
www.turbocity.com offers dual TBI setups.
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Old Aug 22, 2002 | 06:26 PM
  #6  
DEATH88305's Avatar
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From: HUMBOLDT
Car: 1988 IROC CAMARO
Engine: 5.0 F.I.
Transmission: 700 R 4
FOLLOW THE ABOVE LINK.

HERES A PIC OF THE DUAL TBI SETUP.
Attached Thumbnails TWO TBI's ON DAUL QUAD MAN W/ADAPTERS?-efidual.jpg  
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Old Aug 22, 2002 | 10:43 PM
  #7  
vette9190's Avatar
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From: Lowell, In
Car: 1991 Chevy Camaro RS
Engine: 350 TPI
Transmission: 700R4,
Axle/Gears: 3.73 w/SLP Zexel Torsen Limited Sli
Turbo city has temporarily halted sale of this product...Er something like that. Anyways they don't sell it anymore, thay say there was no market. Oh well! But hay while were at it why don't I throw this on out there just for grins and giggles. Why stop at two tbis when three would be better. Take a tri-power manifold and mod it. Just a crazy thought.
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Old Aug 23, 2002 | 12:26 PM
  #8  
AlexJH's Avatar
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Engine: 5.7L V8
Transmission: 700R4
If you search on this board you will find that the main problem is firing the injectors... the ECM can only drive the 2 stock ones.

I'm working on a driver board from a schematic that JPrevost found, and I hope to get an ECM bench hooked up this winter to test it out.
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Old Aug 23, 2002 | 01:36 PM
  #9  
iroc22's Avatar
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From: Surrey, BC
K now Im curious and I don't know squat about car computer systems. How can the 7730 drive 6 injectors and 8 injectors on either the 2.8/3.1 and 5.0/5.7?
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Old Aug 25, 2002 | 07:15 AM
  #10  
blue69's Avatar
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From: central ny
the injectors used in the tpi setups are a lesser load on the ecm than the ones used on a tbi setup
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Old Aug 29, 2002 | 03:50 PM
  #11  
ChevelleCLM's Avatar
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From: Ocean Springs MS USA
Do a search on my username. I was planning on adding axtre injector drivers into a 7747, and paralelling the IAC stepper lines, and using 1 tps. We all know how life is, and how plans get changed.
At the moment, I am finishing up my 87 dodge raider with a 89 Starion turbo motor.
If you guys think it is fun to whoop on rice in a 3rd gen, try it in a boxy 4wd lifted with 31 superswampers on it!!!

I love civic boys face when I mash on it, and let off in his face so he can hear that Blow off, and then romp back on it, and spool past him.
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