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

Confusion has set in(once again).HELP!

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Old Apr 22, 2001 | 12:38 AM
  #1  
88birdformula's Avatar
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From: Wichita, KS, U.S.A.
Confusion has set in(once again).HELP!

Well, that got ya in here. I'm fairly new to the third-gen scene here(couple months) and keep hearing about a cross-fire TBI??? What exactly is this. Thanx guys.

P.S. I did a search and found nothing.

------------------
no real mods...YET

I opened my garage and hop into my Mustang, start the engine and imagine cruising down the road. . . . then I wake up in a cold sweat.
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Old Apr 22, 2001 | 12:44 AM
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From: jacksonville
Im not sure how it works, but early 80's chevrolet did some experimenting on the camaros and vettes and put this intake on it. It did not produce good numbers as far as power goes.
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Old Apr 22, 2001 | 02:27 AM
  #3  
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
crossfire injection uses 2 single TBs and a strange manifold. They have a "spinner" to swirl the air/fuel mixture. It didn't produce much power just like the standard TB engines didn't. It wasn't all the intakes fault, usually it was on crappy engines (bad heads etc). Personally I don't like crossfire, too complex for what it is. TB is an evolved crossfire system because it uses the same kind of injection system but a different design which resembles a carb. There weren't too many performance parts for the crossfire setups. Go to www.turbocity.com, they have some stuff but it's still not worth the effort, TBI is more flexible and cheaper since it was offered in more than just a few vehicles.

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, Jon (350 TBI! it's trenuous and efficacious while getting 23mpg highway with off the shelf eprom)
91 Red RS w/grey int, sq stereo (Alpine v12, kicker solo, MB quart premium etc)AIM: JPrevost
  • Holley 670 TB unit w/ 1/2" spacer/adapter
  • Edelbrock RPM vortec intake
  • 350ho 330hp vortec crate motor
  • 8" harm. balancer
  • Stewart stage 2 water pump w/160 thermo
  • SLP tri-y headers to full 3"
  • Rebuilt trans w/ SLP shift kit
  • Centerline 16x8's all around
  • 36/24 mm sway bars
  • Full poly bushings, even motor mounts
  • SLP LCA and panhard
  • Alston SFCs
  • Edelbrock 3 point STB
  • Global west steering brace aka wonderbar
  • Eibach pro kit springs
  • Bilstien high perf. struts and shocks
  • All this and I still have AC
My websiteAny questions?
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Old Apr 22, 2001 | 03:03 AM
  #4  
Tas's Avatar
Tas
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I think its the intakes fault. The idea is sound though. look at the '69 Z28, they had a Cross Ram intake, just get one of those intakes and put dual TBIs on them.

------------------
-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Soon to be installed:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz
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Old Apr 23, 2001 | 12:40 AM
  #5  
88birdformula's Avatar
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From: Wichita, KS, U.S.A.
Okay, so the x-fire is kinda screwy and not worth the work. What about putting two or even three tbi units on an intake for two carbs. Possible?? How could I go about doing it.
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Old Apr 23, 2001 | 02:28 AM
  #6  
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Tas
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get an old 6 pack carb intake(for three 2 barrel carbs), 2 more stock tbis, 3 TBI to 2barrel carb adapters from Howell, then some wacky computer to run 6 injectors, maybe from a 4.3L v6. good luck. I WANT TO SEE THAT!
-Tas

[This message has been edited by Tas (edited April 23, 2001).]
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Old Apr 23, 2001 | 09:05 AM
  #7  
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From: SC
Can you imagine the confusion then? 3 separate TB units. Would you have each of the units spit out 1/3 of the volume needed? Anything else would require separate sensors, etc. Sounds kinda superfluous except for possibe "Coolness" value. BTW Has anyone else noticed that generally when coolness goes up, so do headaches?

Go ahead and add two more injectors and you have MPFI. Much better.

Just my thoughts.

Clayton
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Old Apr 23, 2001 | 01:20 PM
  #8  
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Tas
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back when 6 packs were coming from the factory stock, they'd run off the middle carb most of the time and then on all 3 when floored.

[This message has been edited by Tas (edited April 23, 2001).]
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Old Apr 24, 2001 | 10:25 PM
  #9  
Keith5's Avatar
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From: Wilmington NC
Car: C1500
Engine: 350
Transmission: 700r4
Axle/Gears: 2.73
I would use 2.8 TBI's.
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Old Apr 25, 2001 | 12:28 AM
  #10  
88birdformula's Avatar
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From: Wichita, KS, U.S.A.
Well, how would I hook up the throttle cable to multiple TBIs?? Not to mention the other ****, sensors and blah. How would I just use the middle unit sometimes and others at other times??? I'm usually prettey creative when it comes to this stuff, but I'm at a loss on this.
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