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

recommended tbi headers?

Thread Tools
 
Search this Thread
 
Old 11-02-2009, 09:40 AM
  #1  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
recommended tbi headers?

I am looking @ these headers from summit. They come with a y-pipe making installation way less of a headache. Opinions/suggestions??

http://www.summitracing.com/parts/ED...ize|5.0L%2f305
Old 11-02-2009, 05:13 PM
  #2  
Supreme Member

iTrader: (6)
 
SiCkRs's Avatar
 
Join Date: Dec 2008
Location: Norwalk, CA
Posts: 2,540
Likes: 0
Received 0 Likes on 0 Posts
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: recommended tbi headers?

Id say go for some 2055 they are $500 at jegs instead of those edelbrock or order some from dyno don which is what i am thinking of doing
Old 11-02-2009, 06:21 PM
  #3  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

what would be the difference?
Old 11-02-2009, 09:25 PM
  #4  
Supreme Member

iTrader: (6)
 
SiCkRs's Avatar
 
Join Date: Dec 2008
Location: Norwalk, CA
Posts: 2,540
Likes: 0
Received 0 Likes on 0 Posts
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: recommended tbi headers?

Actually i checked right now and here the site http://www.jegs.com/i/Hooker/520/2055/10002/-1?CT=999 for the hooker headers they are cheaper than the edelbrock ones and they say they are easier to install than other headers.
heres a sticky too https://www.thirdgen.org/forums/exha...ion-chart.html
hope this helps
Old 11-03-2009, 09:00 AM
  #5  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

thanks for the info...it says only from years 86-90 not sure why.
Old 11-03-2009, 09:16 AM
  #6  
Member

 
bluers91's Avatar
 
Join Date: Dec 2005
Location: Wild Blue Yonder
Posts: 443
Likes: 0
Received 2 Likes on 2 Posts
Car: 1991 RS Camaro
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: recommended tbi headers?

They still fit a 91 and 92. I have them on my car. You should look into a 3" cat and 3" catback at the same time. I just recently installed the 2055's and they make a big difference.
Old 11-03-2009, 10:17 AM
  #7  
Senior Member

iTrader: (5)
 
graebz28's Avatar
 
Join Date: Sep 1999
Location: Kansas City, MO
Posts: 662
Received 0 Likes on 0 Posts
Car: 83 Z28
Engine: 406
Transmission: T56
Axle/Gears: 9" with 4.10s
Re: recommended tbi headers?

I have some ceramic coated 2055s that will be for sale at the end of the month. I have the y pipe and a catco performance cat and dynomax 3" cat back as well. Please keep me in mind
Old 11-03-2009, 11:50 AM
  #8  
Supporter/Moderator

iTrader: (7)
 
ShiftyCapone's Avatar
 
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,223
Likes: 0
Received 379 Likes on 291 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: recommended tbi headers?

Hooker 2055's or Dyno Don headers are what you want. The Edelbrock units for these cars are pretty poor. They are slightly better than stock. They have small primaries, and stock tube diameters intended to mate to the stock cat-back. You will want to replace the ehxuast from the headers back with a 3" system designed for a TPI car. If you can only buy one section now I would opt for the cat-back and then go for the cat and headers later.
Old 11-03-2009, 12:57 PM
  #9  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

Originally Posted by graebz28
I have some ceramic coated 2055s that will be for sale at the end of the month. I have the y pipe and a catco performance cat and dynomax 3" cat back as well. Please keep me in mind
I am getting a magnaflow catback over the winter 16829 i believe it is, so I would get the headers installed the same time. Please keep me in mind when you sell the headers. I think I will stick to the Magnaflow exhaust but I may want the performance catalytic converter. Let me know a price, thanks.
Old 11-03-2009, 02:12 PM
  #10  
Senior Member

iTrader: (5)
 
ownor's Avatar
 
Join Date: Sep 2006
Location: Austria
Posts: 951
Likes: 0
Received 2 Likes on 2 Posts
Car: 84 TA / 89 Formula
Engine: LS1 / L03
Transmission: T56 / 700R4
Axle/Gears: 3.73 / 3.27
Re: recommended tbi headers?

they are listed for 86-90 because 91/92 the cat hanger is different.
the 2055 are really good headers, although a bit costly. be sure to get a good felpro or copper gaskets and stage8 or other locking bolts though.
a catco 9118 and some 3" catback and your exhaust side is as good as it gets on a thirdgen
Old 11-03-2009, 02:41 PM
  #11  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

how much different is it? will it give me trouble installing?
Old 11-03-2009, 03:03 PM
  #12  
Senior Member

iTrader: (5)
 
ownor's Avatar
 
Join Date: Sep 2006
Location: Austria
Posts: 951
Likes: 0
Received 2 Likes on 2 Posts
Car: 84 TA / 89 Formula
Engine: LS1 / L03
Transmission: T56 / 700R4
Axle/Gears: 3.73 / 3.27
Re: recommended tbi headers?

hmm *scratches head* a set of headers shouldn't have a whole lot to do with the hanger on the outlet side of the cat right? guess i got that wrong somewhere in my head. anyways, the cat hanger is different 91/92 which will matter if you get the 9118 catco just get a pre-91 cat hanger and be good.
but as for the 2055, i think it might say 86-90 because after that the VIN F TPI had dual-cats and the y-pipe wouldn't fit? not sure on that, but i know several guys with 91 or 92 cars have these installed so i'm sure you'll be fine.

here's a pic of a install of 2055 and the 9118 cat on a 91 305 TPI:
Old 11-03-2009, 03:18 PM
  #13  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

oh lol, the hanger, lol..i misread what u said, lol, would I be able to buy the hanger from summit or will i have to junkyard it?

Last edited by goalieforlife; 11-03-2009 at 09:50 PM.
Old 11-03-2009, 10:08 PM
  #14  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

couldn't I just buy a new one for a 92 like this one and not have to move the cat hanger.... http://www.summitracing.com/parts/MPE-93456/
Old 11-03-2009, 10:28 PM
  #15  
Supreme Member

iTrader: (6)
 
SiCkRs's Avatar
 
Join Date: Dec 2008
Location: Norwalk, CA
Posts: 2,540
Likes: 0
Received 0 Likes on 0 Posts
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: recommended tbi headers?

You could also make low offers at banditexhaust.com and they will give you a low price i got a magnaflow cat back their for $315
Old 11-04-2009, 11:41 AM
  #16  
Senior Member
 
kkingsrulee's Avatar
 
Join Date: Oct 2008
Location: Temple City, CA
Posts: 800
Likes: 0
Received 0 Likes on 0 Posts
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: recommended tbi headers?

I installed the 2055's about three months ago, along with a 3'' magnaflow cat, 3'' hooker maxflow muffler, and 3'' catback.

I did everything that I could do myself, I can't weld so I had to take it to an exhaust shop to have the muffler welded to a catback system.


The install of the headers was pretty difficult, depending on what you remove.
The passenger side manifold is difficult to remove (due to these "lock-tabs", if you will, placed over a couple of the bolts on the manifold) and the lack of room to work in.

It is also very difficult to drop the passenger side header into place, I did it from the top (removed A/C canister in order to gain more room) others have said they got it into place from the bottom by removing the starter but I figured I could do it from the top, although I had to remove the starter cable and wiring in order to drop it into place.

It is tough to do without scratching the finish of the header.

The driver's side manifold and header are both removed and installed literally without a problem.

Either way be ready for a good couple of hours of work, scratched and banged up hands, and frustration. I suggest getting someone to help, in retrospect I believe it would have made my job easier.
Old 11-04-2009, 11:59 AM
  #17  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

i will be taking it to a garage most likely.
Old 11-04-2009, 12:06 PM
  #18  
Member

 
bluers91's Avatar
 
Join Date: Dec 2005
Location: Wild Blue Yonder
Posts: 443
Likes: 0
Received 2 Likes on 2 Posts
Car: 1991 RS Camaro
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: recommended tbi headers?

Those lock tabs are a royal pain to deal with. Some of them are not easy to reach at all much less bend out once you reach them. I used a small straight slot screwdriver to bend them out.

When doing this i had already installed an A/C delete pulley which helped on the passenger side. I still had to remove the starter and slide the header up from the bottom. It was a knuckle busting process for sure. I installed the headers, y-pipe and 3" Cat. I temporarily bolted the stock catback to the cat and drove it to a muffler shop to have them cut and install the 3" catback I had. It was a single piece catback so I either had to have it cut and welded or drop the rear. For $50 they cut and and welded it on. It was well worth it. If you have one of them 3 piece catbacks from hooker or flowmaster you could bolt that up in the driveway. I had a friend help which saved a bunch of time.
Old 11-05-2009, 01:28 AM
  #19  
Senior Member

iTrader: (5)
 
ownor's Avatar
 
Join Date: Sep 2006
Location: Austria
Posts: 951
Likes: 0
Received 2 Likes on 2 Posts
Car: 84 TA / 89 Formula
Engine: LS1 / L03
Transmission: T56 / 700R4
Axle/Gears: 3.73 / 3.27
Re: recommended tbi headers?

indeed, with AC it can be a bit difficult. you can lift the motor up on one side after loosing the motor mount bolt though. that will help a ton to get the pass side one in.

btw, be sure to open up the collector ball flange on the headers a bit which will ensure better flow! you can cut the flange back about 1/2 inch or some less, don't quote me on this measurement though. just do a mock-up and you will quickly find how much you can cut the flange down. also watch the torque you put to these collector flange bolts.

otherwise, as said, get good locking bolts and gaskets, otherwise you'll be back to the garage every week or so to retorque them which is a major PITA anyways.

Last edited by ownor; 11-05-2009 at 01:32 AM.
Old 02-06-2010, 01:02 AM
  #20  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

thats why the garage will be doing most of the header work... way easier from underneath.
Old 02-17-2010, 02:06 PM
  #21  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

would i need to do any welding when putting on the magnaflow catback exhaust and cat and the 2055 headers and y-pipe?
Old 02-17-2010, 02:17 PM
  #22  
Member

 
bluers91's Avatar
 
Join Date: Dec 2005
Location: Wild Blue Yonder
Posts: 443
Likes: 0
Received 2 Likes on 2 Posts
Car: 1991 RS Camaro
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: recommended tbi headers?

You shouldn't have to if you have the right parts that will bolt up. I used the 2055's with Y, Catco 3" cat, and a Dynomax and they all bolted up. I didn't think magnaflow actually made a catback for our cars so you may need to weld. I know mine is leaking slightly where the cat has the clamp on it to the Y pipe. I have thought about having it welded.
Old 02-17-2010, 02:29 PM
  #23  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

i believe summit has a magnaflow cat. here is and ebay add for one: I think this is a direct fit component. http://cgi.ebay.ca/MAGNAFLOW-CATALYT...item518fef75ce
Old 02-17-2010, 02:33 PM
  #24  
Member

 
bluers91's Avatar
 
Join Date: Dec 2005
Location: Wild Blue Yonder
Posts: 443
Likes: 0
Received 2 Likes on 2 Posts
Car: 1991 RS Camaro
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: recommended tbi headers?

Yes, they make the CAT itself. I meant the catback which is the pipe after the cat as well as the muffler. I know flowmaster, dynomax and hooker all make a kit that is a direct bolt on.
Old 02-17-2010, 03:12 PM
  #25  
Senior Member

Thread Starter
iTrader: (4)
 
goalieforlife's Avatar
 
Join Date: Jan 2007
Location: Newfoundland, Canada
Posts: 973
Received 4 Likes on 4 Posts
Car: 1991 Pontiac Trans Am GTA
Engine: V8 305
Transmission: Automatic Transmission
Re: recommended tbi headers?

that is a good question, i have no idea if magnaflow makes one.
Old 02-22-2010, 09:11 AM
  #26  
Member
 
ruberbanman126's Avatar
 
Join Date: Aug 2007
Location: Pittsburgh, PA 15202
Posts: 233
Likes: 0
Received 1 Like on 1 Post
Car: 1992 Camaro RS, 1999 GMC Jimmy
Engine: 305 TBI, 4.2L I6
Transmission: 700R4, 4L60-E
Axle/Gears: 10 Bolt 2.73, 10 Bolt Posi 3.42
Re: recommended tbi headers?

I just installed a magnaflow catback on my car. It sounds amazing! The only trouble i had was fitting all the pipes together, there are about 4 or 5 pipes that connect with clamps, once everything was up under the car it was easier to fit all the pipes and get them into place.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MustangBeater20
TBI
11
10-29-2022 09:20 PM
downsouthboy
Tech / General Engine
4
08-29-2015 11:29 AM
InfinityShade
Transmissions and Drivetrain
15
08-22-2015 08:00 PM
Out-Cast
Exhaust
6
08-22-2015 07:49 PM
MustangBeater20
Carburetors
0
08-21-2015 02:42 PM



Quick Reply: recommended tbi headers?



All times are GMT -5. The time now is 06:03 AM.