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

Intake And Exhaust Mods Need Imput

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Old Sep 23, 2005 | 11:02 AM
  #1  
51F1's Avatar
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From: READING, PA.
Car: 1991 GTA,1951 ford f1 pickup
Engine: 305
Transmission: 700r4
Axle/Gears: 3.42 10-bolt
Intake And Exhaust Mods Need Imput

I've been doing some reseach and I tried doing a but I need more specific info. First off I have a 305 with a 5 speed and 3.42 posi. I have hedman long tube hedders and a magnaflow catback for 94-98 camaro in mind. I know I need to make my own y-pipe and adapt the catback to fit but that is fine. Also I was thinking of a carb intake either Weiand 8000 or edelbrock 3701. I work in a machine shop so fabbing a throttle linkage and y-pipe aren't the problem. I'm looking for opinions on parts selections or problems that I might not be aware of. thanks for your help.
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Old Sep 23, 2005 | 02:44 PM
  #2  
NEEDforSPEED's Avatar
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theres a few ods and ends when going with a carb intake.... i love the one i went with!!
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Old Sep 23, 2005 | 02:54 PM
  #3  
51F1's Avatar
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Joined: Dec 2004
Posts: 75
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From: READING, PA.
Car: 1991 GTA,1951 ford f1 pickup
Engine: 305
Transmission: 700r4
Axle/Gears: 3.42 10-bolt
I beleive I read else where that you made your own. Am I right and if so any pictures. Also what odds and ends. The 2 choises have provisions for EGR. What am I missing?
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Old Sep 24, 2005 | 03:58 PM
  #4  
TonyC's Avatar
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From: Mesa, AZ
Car: A Camaro
Engine: Weak
Transmission: Weaker
Here are the notes from putting mine on: https://www.thirdgen.org/techbb2/sho...hreadid=214897
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Old Sep 26, 2005 | 10:51 AM
  #5  
51F1's Avatar
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Joined: Dec 2004
Posts: 75
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From: READING, PA.
Car: 1991 GTA,1951 ford f1 pickup
Engine: 305
Transmission: 700r4
Axle/Gears: 3.42 10-bolt
thanks TONYC any help is appreciated. Anyone have problems with hedman long tube headers on a 5-speed car?
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Old Sep 26, 2005 | 02:02 PM
  #6  
90FormulaWS6's Avatar
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Joined: Feb 2003
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From: Edison, NJ
Car: 1991 Camaro RS
Engine: 305 TBI
Transmission: WCT5
FYI unless you have pre86 heads neither of those intake manifold will work on your car. You need something that will fit 87+ heads. For example Summit PN EDL-3704, EDL-2104, etc. The angle on the center intake manifold to head bolts are different from 86 to 87. Id suggest going with a carb manifold w/ adapter plate, but if you want ease of installation go with EDL-3704 since there is no modification to throttle cables etc.

As far as long tubes, there shouldnt be a problem w/ a manual trans, the only problem would be ground clearance is limited.

But if your looking for more power you have to get rid of the cam and get a tune(i know its been said a billion times and played out) but those are the two main things contributing to TBI's lack of power. So before you look into a new intake manifold you might want to look into a cam. You will benefit from that way more than the intake manifold only. IMO

Last edited by 90FormulaWS6; Sep 26, 2005 at 02:07 PM.
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Old Sep 27, 2005 | 02:33 AM
  #7  
91RedFirebird's Avatar
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Joined: Jan 2003
Posts: 263
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From: TX
Car: 91 firebird
Engine: 350
Transmission: t-56
I don't think the headman headers fit the 5-speeds hits the slave cylinder. Call them and ask.
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Old Sep 27, 2005 | 06:42 AM
  #8  
BMmonteSS's Avatar
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From: Buckhannon, WV
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears
You can simply elongate the center holes, it's not that big of a deal. I use cap head bolts and no spacer, some people make spacers, some buy the ones that come with the stealth ram. It really isn't that big of a deal. I think getting the throttle cables to line up correctly is a much bigger deal.
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