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Old 11-03-2007   #1
wildbird
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
would this dual exhaust setup work

i was wondering would this dual setup work for my 88 gta.... its two 2.25 inch pipes using the stock route of the original single system.....could this work... i have hedman long tubes and this should fit and ground clearance shouldnt be a problem because its the stock route..... do you guys think it will sound better than a 80 series setup.....

http://a592.ac-images.myspacecdn.com...30938caf67.jpg

http://a840.ac-images.myspacecdn.com...28785fa4cf.jpg
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Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

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dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-03-2007   #2
FearThisGTA
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GTA Year: 1991
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Re: would this dual exhaust setup work

IMO, sound is a personal preference, but as far as that workin hmmmm, I dont think it will but to find out you may have to get the car in the air and hold it up there and see if it will.
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Old 11-03-2007   #3
MunsonGTA
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Re: would this dual exhaust setup work

doesn't look like it would fit to me. the pipes that bolt to the headers look like they're going to run down the middle of the car. and then the 2nd section looks way off to one side. maybe it's just the view from the pics, but it doesn't look like it would work to me. i'd also think you'd have to modify the muffler setup. what kind of car did that setup come from?
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Old 11-03-2007   #4
wildbird
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
Re: would this dual exhaust setup work

it came of a 89 iroc... but it should fit a 88 gta..... i just want a setup that sounds better... i really want duals...
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-03-2007   #5
Stephen
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Re: would this dual exhaust setup work

I've seen it done lots of times, but my question is why? Besides the sound?

A single 3" will flow plenty, and weight less than a true dual system

Can true duals be run? Yes, no doubt there.

Will THAT fit? I kinda doubt it. It looks like it is from 2 different set ups. The first piece, looks like it brings both pipes to the middle, yet in the second pic, the inlet ends are obviously offset, like they should be.

So, I'm real skeptical on THAT system fitting.
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Old 11-03-2007   #6
wildbird
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
Re: would this dual exhaust setup work

well the guy did it in two pieces to show people how he did it..... when he put it on his car it looked exactly like single 3 inch setup route..... its just two 2.5 inch pipes closer together.. my car is lifted in the air right now so ive looked underneath my car and measured it and it seems to fit without a problem.. and yes im only getting this setup for the looks and for the sound cause i have a mild cam and i want to get all the sound i can get...




see here is a guy with a very similar setup..... imo it looks much cooler than the catback design..... so i know it can be done...
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362

Last edited by wildbird; 11-03-2007 at 07:11 PM.
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Old 11-03-2007   #7
Stephen
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Re: would this dual exhaust setup work

Look on TGO. There is a whole dual exhaust thread, so it's definately doable. I can't picture how those would line up though, as the first pic looks like they run right beside the driveshaft, and the second pic looks correct, as far as the over-axle location. I'm just not seeing how they would line up correctly. Bad camera angle?
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Old 11-03-2007   #8
wildbird
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GTA Year: 1988
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Re: would this dual exhaust setup work

yeah i thought the same too. but they are actually on the passenger side of the driveshaft like the stock setup.... if i can get the muffler shop to duplicate this setup i will be a happy camper..... they said they can put duals on my car but they would have to dump it under the seats. if i show them this then they should have no problem because its using the stock route.... is it possible to put an h pipe and cats on the setup that i showed you....
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-03-2007   #9
merc3065
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Re: would this dual exhaust setup work

it can be done, that setup will have issues with ground clearance for the length of the car, you will also ahve to consider shielding your fuel lines from heat.

Without an H/X pipe you will find the sound extremely loud. Also if there are no cats you more than likely will get a fine.

You have to run the pipes underneath the tranny crossmember.

It is in no way near stock routing except for going over the diff.

It will work, it will sound loud and obnoxious and may sound tinny if it's not done right. Good luck if you plan to do it as fitment and heat shielding will be needed for anything following the tranny tunnel.
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Old 11-03-2007   #10
wildbird
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GTA Year: 1988
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Re: would this dual exhaust setup work

well im not exactly getting this setup.... im just using this as a guide.... i will put a h pipe on there and small cats.... i already talked to the muffler people... they said they can do true duals on my car for 350.00... but i would have bullet mufflers... or i think he said glasspacks.... anyways to those sound good...
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-04-2007   #11
Stephen
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Re: would this dual exhaust setup work

My Texas Speed & Performance cat-back, is one that is actually built for a LS1. It uses a bullet Magnaflow right after the cat. I've considered putting on a Boom Tube side exit, since I can easily keep my muffler.
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Old 11-04-2007   #12
wildbird
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
Re: would this dual exhaust setup work

well ive heard that those glasspacks and those bullet mufflers dont sound good on thirdgens.... if anything alot of people say that it makes your car sound like an old truck.... i dont want that....
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-04-2007   #13
Stephen
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Re: would this dual exhaust setup work

Glasspacks sure. My Bullet Magnaflow? I'll never be mistaken for a truck...
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Old 11-04-2007   #14
wildbird
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Re: would this dual exhaust setup work

well are those bullet as small as those glasspacks.... casue if i want duals im pretty sure i will need sum small mufflers...
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-04-2007   #15
Stephen
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Re: would this dual exhaust setup work

Here's mine...Rumbler
Attached Images
File Type: jpg exhaust.jpg (47.5 KB, 16 views)
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Old 11-04-2007   #16
wildbird
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
Re: would this dual exhaust setup work

okay yeah would thats the size muffler i would need for true duals.... im sorry but do you have a small cat and dynomax bullet muffler on there...
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My Super L98 lol"

Forged 355 4 bolt, FIRST injected TPI, L98 headed, hotcammed engine

"Completely Assembled and built by My dad and I"

Tuned by PCM4less

dyno numbers and timeslips comming soon

"12 Second daily Driver GTA"

http://www.thirdgen.org/techboard/vb...=view&id=62362
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Old 11-04-2007   #17
merc3065
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Re: would this dual exhaust setup work

My dad had glasspacks on his 67 camaro.

Sounded awesome. 327 small block
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Old 11-04-2007   #18
Stephen
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Re: would this dual exhaust setup work

Quote:
Originally Posted by wildbird
okay yeah would thats the size muffler i would need for true duals.... im sorry but do you have a small cat and dynomax bullet muffler on there...
The yellow text is a clickable link to my cat back. Since Links here aren't highlighted in a different color, to distinguish them from the standard text, I found my own way around that, like the yellow text in my sig. A link to the Photobucket my GTA stuff 4 sale.
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17x9 275/40s front/17x11 315/35s rear custom widened & powdercoated ROH Snypers--02 Rear wing
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Old 11-04-2007   #19
MunsonGTA
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Re: would this dual exhaust setup work

glasspacks will sound like crap on a thirdgen. and that black TA with the true duals, actually needs it. that car puts out over 1k rwhp with a BBC and a supercharger.
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87 GTA: Forged 408 LSX short block, TEA stage 2 cnc ported 243 heads, BTR Stage 3 stroker cam, Fast 102 intake, NW 102 TB, Longtube headers, custom 411 ECM, custom harness, custom tuned, Performabuilt stage 2 4l60E with PTC 2800 stall, 9 bolt rear with 3.70 gears and TAP girdle.

11.16 at 123 mph.
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Old 11-04-2007   #20
Stephen
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Re: would this dual exhaust setup work

Not true. A buddy of mine has a glasspack, just behind the cat, before the axle, like my Magnaflow setup is. Sounds good. Not like some hill-billy, redneck truck either.
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