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

tbi spacer ?

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Old Jan 2, 2009 | 10:22 PM
  #1  
dwillis's Avatar
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From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
tbi spacer ?

will a tbi spacer for a 454 fit and work the same as one for a 350.


I know the answer the question is for a skeptical friend.maby if he hears it from others he will believe..Thanks Guys
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Old Jan 3, 2009 | 11:32 AM
  #2  
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From: San Jose, CA
Car: 2002 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
Re: tbi spacer ?

it will fit but you won't want to use it because the bore of the 454 spacer is bigger. You'll probably get fuel puddling up on the intake manifold.
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Old Jan 3, 2009 | 10:15 PM
  #3  
dwillis's Avatar
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From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
Re: tbi spacer ?

Originally Posted by vjo90RS8
it will fit but you won't want to use it because the bore of the 454 spacer is bigger. You'll probably get fuel puddling up on the intake manifold.
thats what I told him and also said that a simple intake boring would remedy that.thanks for the info bro
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Old Jan 4, 2009 | 12:36 AM
  #4  
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From: San Jose, CA
Car: 2002 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
Re: tbi spacer ?

lol, he is going to bore the intake manifold so he can use a 454 TBI spacer with a 305/350 tbi????, am I getting that right because hate to say but that is stupid. Save the money and buy a 305/350 spacer or if you are going to bore in the intake then get a 454 TBI to match it (might not be able to get to 2" on the intake anyways) and unless he is pushing a good deal of power the 305/350 TBI will be more than enough to support it.

Last edited by vjo90RS8; Jan 4, 2009 at 01:08 AM.
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Old Jan 4, 2009 | 10:55 AM
  #5  
dwillis's Avatar
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From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
Re: tbi spacer ?



Well I hate to agree but I do...Its hard to convince someone to do something right when they are used to jerri rigging suff..He's getting the Helix spacer on the cheap thats why he is so adimate on using it..I've tried to get him to just buy a diff intake with a carb/tbi adapter,But like I said hard to take the rigging out of a jerri..lol...
If I hadn't gotten rid of all my tbi stuff when I sold my Camaro I had all the stuff he needs..But I have TPI now and no need for tbi stuff lying around..
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