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

Replacing Intake

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Old Jan 9, 2006 | 05:49 PM
  #1  
ThraxXx's Avatar
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From: Ontario, Canada
Car: 1988 Pontiac Trans Am
Engine: 5.0L Fuel Injection
Transmission: Automatic 4speed /w OVerdrive
Replacing Intake

Well i was thinking of replacing my intake manifold for this Edelbrock Performer Intake.

The site says that it will fit a 305/350 TBI firebird and camaro from 1987 to 1992 and well i have a 1988 therefore theoretically it should fit right?

I just want some input before I order this bad boy up.
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Old Jan 9, 2006 | 06:06 PM
  #2  
crrllmich's Avatar
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From: Red Lion, PA
Car: 91 Camaro RS, 99 Camaro Z28
Engine: L03, LS1
Transmission: 700R4, T56
Axle/Gears: bunch of 10 bolts how scary is that
Yes it will fit. You can also get carb intakes with a TBI adapater.
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Old Jan 9, 2006 | 06:10 PM
  #3  
90CamaroTBI's Avatar
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From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
Ok I wanna do this too, if I mark where the distributor goes and drop it back in exactly in the same spot it came from on the new intake, will me timing be close to where it was?
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Old Jan 9, 2006 | 06:11 PM
  #4  
ThraxXx's Avatar
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From: Ontario, Canada
Car: 1988 Pontiac Trans Am
Engine: 5.0L Fuel Injection
Transmission: Automatic 4speed /w OVerdrive
Sweet thanks for teh speedy response. I think I am gonna order that bad boy up.
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Old Jan 9, 2006 | 06:59 PM
  #5  
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From: Chicago, IL
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
your profile says that you have TPI heads. As long as they are 081 heads, it will fit fine, 416's will take some modification. Just a heads up.

Ok I wanna do this too, if I mark where the distributor goes and drop it back in exactly in the same spot it came from on the new intake, will me timing be close to where it was?
Yes, your timing will be right on if you make sure it goes in right where it was, as long as you DON'T turn the engine over at all. If the position of the engine changes, that doesn't work, otherwise you're good to go.
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Old Jan 9, 2006 | 09:38 PM
  #6  
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by BronYrAur


Yes, your timing will be right on if you make sure it goes in right where it was, as long as you DON'T turn the engine over at all. If the position of the engine changes, that doesn't work, otherwise you're good to go.
It can be done but with only the most precise installation as Bron mentioned. This is really hard to do without at least getting your timing off a degree or two so don't even count on this method if this is your first distributor install. It is best to check the timing and re-set the base everytime you pull the distributor. It is only a few seconds of extra work just to be sure.

Check the "LT1 cam digest" for complete intake manifold installtion procedures and read the intake selection posts in the "new to TBI" sticky.
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Old Jan 9, 2006 | 11:32 PM
  #7  
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From: Chicago, IL
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
Yeah, I agree with Shifty, its absolutely best to check your timing and make sure it's set right, but it will at least be close so that you don't have to worry about turning the engine to TDC to drop in the distributor.

Personally, i prefer other manifolds to the Performer TBI but many like that manifold too. If you're looking for a direct bolt-in I suppose that would be your best bet. Good luck with it, its an easy swap.
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Old Jan 10, 2006 | 05:33 AM
  #8  
90CamaroTBI's Avatar
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From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
How much less does that baby weigh than stock?
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Old Jan 10, 2006 | 08:10 AM
  #9  
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Originally posted by 90CamaroTBI
How much less does that baby weigh than stock?
Probably not much, your stock one should also be aluminum.

Correct me if I am wrong, but isn't the Performer TBI manifold the same as the stock one? Same height, runner size, bore size, and plenum?

RBob.
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Old Jan 10, 2006 | 09:22 AM
  #10  
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by RBob
Probably not much, your stock one should also be aluminum.

Correct me if I am wrong, but isn't the Performer TBI manifold the same as the stock one? Same height, runner size, bore size, and plenum?

RBob.
Not really. Although some parts resemble the stock intake the plenum size is much larger. I don't have the exact numerical differences in runner size but the intake is based off of their carb performer intake. It is not the best intake but it is better than stock and a good replacement for those who need a direct bolt on application.
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Old Jan 11, 2006 | 07:49 PM
  #11  
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Got'cha, so it is a step up from a stock GM TBI intake. Not a lot, but some. It would then be a good choice for a stock'ish or mildly built motor that someone needed an intake for.

RBob.
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Old Jan 11, 2006 | 08:19 PM
  #12  
vorgath's Avatar
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From: San Diego, CA
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
Plus it is smog legal correct ?
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Old Jan 11, 2006 | 08:41 PM
  #13  
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From: Ohio, near columbus
Car: 89 iroc-z
Engine: 305tpi
Transmission: wc-t5
Axle/Gears: 10 bolt 3.08 posi (4 now)
from what i've heard and read your good to go with the smog side too .
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Old Jan 11, 2006 | 09:12 PM
  #14  
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Yes it is smog legal.
Attached Thumbnails Replacing Intake-mvc-024s.jpg  
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Old Jan 12, 2006 | 06:32 AM
  #15  
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From: RI
Car: 93 Caprice 9C1
Engine: L05
Transmission: 4L60
Axle/Gears: 3.42
Didn't Fast355 use that intake to make 275rwhp in his 312 TBI? That's a pretty good endorsement if so.
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