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How are these headers for a 305 tbi

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Old Mar 6, 2008 | 09:06 AM
  #1  
Rockyd's Avatar
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Posts: 540
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From: Fort Worth TX
Car: 89Z28 Vert
Engine: 350/tbi
Transmission: 700r4
Axle/Gears: 3.27 Posi
How are these headers for a 305 tbi

i have a high flow cat with a 3 in cat back flowmasters and i need headers now what do you all think of these headers and y pipe http://store.summitracing.com/partde...7+&appfilter=1
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Old Mar 6, 2008 | 04:33 PM
  #2  
onebad89RS's Avatar
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Joined: Jul 2006
Posts: 186
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From: waterford, MI
Car: 89 RS
Engine: 305 carbed
Transmission: 700R4
Axle/Gears: 3.42 auburn posi
Re: How are these headers for a 305 tbi

those look pretty good. would probably be a PITA to install though, i have edelbrock TES headers on mine and they were a pain to get the passenger side on.
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Old Mar 6, 2008 | 05:30 PM
  #3  
slow_90firebird's Avatar
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Joined: Jul 2007
Posts: 1,461
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From: Manchester, CT + Nashua, NH
Car: 90 Firebird Formula
Engine: LO3
Transmission: T5
Axle/Gears: 3.08 one wheel peel
Re: How are these headers for a 305 tbi

The general concensus of this forum, is either get the 2055-HKR or if you have a little more money, get Dyno Don's.

I would love to be able to get a good set of headers for that price, but, you get what you pay for. You pay less, you get cheap headers.

I hope somebody comes in and says thay have tried them, that would settle the matter more. Personally, I cant consider anything that doesent have A.I.R tubes.
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Old Mar 6, 2008 | 07:39 PM
  #4  
UNCLE TOM's Avatar
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Posts: 2,403
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From: ms. gulf coast
Car: 91 R/S , 89 dodge p/u
Engine: L31 GM crate re-cammed , 318
Transmission: T-5 , 4 speed auto
Axle/Gears: 3.42 , ?
Re: How are these headers for a 305 tbi

well i have them , ceramic coated on my car . i'm happy , but i'm a cruiser not a racer . they are not the best quality , but not the worst . i spent an afternoon and a 6 pack getting them ready . flanges had welding splatter , Y pipe connection at the Y needed to be opened/cleaned up . installation was not too bad , but not easy . i used mr.gasket copper gaskets , dead soft alum. on the Y pipe . you will need new bolts ( they may come with them ) i don't remember . 12 point bolts are best but hard to find . start torque from center cylinders and work outward , you will need to re-use stock bolts for alt. and a/c comp. and spacers . i used a handfull of 3/8 washers for spacers untill i cut some spacers from s/s 3/8 tube . start all bolts with fingers before any torque and don't forget locktite . 1 1/2 years no leaks 27-29 m.p.g. on hwy. with other mild mods. . good luck .
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Old Mar 7, 2008 | 01:17 PM
  #5  
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: How are these headers for a 305 tbi

As mentioned above, you get what you pay for. Those headers are terrible. Their instructions should read.

Step One: Open Box
Step Two: Place in trash


I went through two sets of these and there were so many problems I don't have the energy to type them all out. Search under my user name and "flowtech headers". I have a detailed thread out there with pictures of their garbage-ness
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Old Mar 7, 2008 | 03:19 PM
  #6  
killacamaro's Avatar
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Joined: Nov 2007
Posts: 268
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From: NY
Car: 88 IROC-z
Engine: LO3 V8 305
Transmission: T5 W/ Stage 2 Clutch
Axle/Gears: 3.23
Re: How are these headers for a 305 tbi

LIKE SHIFFTY SED THOSE HEADERS ARE TRASH. DO NOT GET!!!

go after some hedman headers, thats what i have.
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Old Mar 8, 2008 | 02:07 PM
  #7  
Rockyd's Avatar
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Joined: Feb 2005
Posts: 540
Likes: 1
From: Fort Worth TX
Car: 89Z28 Vert
Engine: 350/tbi
Transmission: 700r4
Axle/Gears: 3.27 Posi
Re: How are these headers for a 305 tbi

sounds good thanks for the advice guys but after beating the wife im going to go ahead and get my 350 (joking about beating her) hedman still a good choice to get thanks alot capone ive read lots of your advice in searches and thanks for all your responses guys
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Old Mar 8, 2008 | 06:38 PM
  #8  
slow_90firebird's Avatar
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Joined: Jul 2007
Posts: 1,461
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From: Manchester, CT + Nashua, NH
Car: 90 Firebird Formula
Engine: LO3
Transmission: T5
Axle/Gears: 3.08 one wheel peel
Re: How are these headers for a 305 tbi

Well, maybe if you beat the wife some more, you will be able to get some of Dyno Don's headers and y-pipe. They are probably the best set I have seen for a thirdgen, of shorties. They are high-dollar, but you gotta remember you are buying something hand-made buy a thirdgen enthusiast. Not by some machine in a factory. Maybe you could work out a deal for some un-coated at a lower price.
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Old Mar 16, 2008 | 11:36 AM
  #9  
TADailyDriver's Avatar
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Posts: 550
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From: Lowell, Michigan
Car: 1988 Trans Am, 2005 Sierra 2500
Engine: Vortec 357
Transmission: Built TH700R4 with 26-2800 Stall
Axle/Gears: GM 10 bolt 3.73 Posi
Re: How are these headers for a 305 tbi

I have a set of 3" Hooker Super Competition Shortie Headers on my 305 TBI and they are awsome. Installation wasn't too hard, and they really open up the engine.
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