Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

how far back do true duals go?

Thread Tools
 
Search this Thread
 
Old Dec 25, 2004 | 12:57 AM
  #1  
natronathon's Avatar
Thread Starter
TECH Fanatic
 
Joined: May 2004
Posts: 1,030
Likes: 0
From: Wichita KS
Default how far back do true duals go?

I am lookin at purchasing a tsp true duals set up 3 inch, with borla 18 inch bullets. How far back towards the rear axle does this set up reach? Is it safe to put exhause tubing under the rear axle due to the fact that the axle needs room to move up and down depending on road condition? I was thinking that the duals dumped before reaching the axle, but I dont know for sure, I am also assuming that 3 inch is too big to go over the axle. Any info on this setup would be greatly appreciated. I am close to purchasing, but I want to make sure I know everything now, so as to advoid agrivating suprises later.

Thanks

Nathan
Reply
Old Dec 25, 2004 | 01:28 AM
  #2  
69_YENKO's Avatar
10 Second Club
iTrader: (16)
 
Joined: Jun 2004
Posts: 1,645
Likes: 1
From: San Angelo, TX
Default

they dump just before the axle at the point where the floor board goes up into the wheel well. 3" over the axle is tough, i havnt heard of it without relocating the PHB (i think thats what it was), under the axle isnt to bad, it just dosnt look as good.

Just get the TSP duals and be happy!!!
Reply
Old Dec 25, 2004 | 02:02 AM
  #3  
cyphur's Avatar
TECH Senior Member
iTrader: (10)
 
Joined: Mar 2003
Posts: 8,009
Likes: 0
From: North Texas
Default

well, go with TSP's setup if you want. I'd rather spend the extra $80-150 and get a custom setup by Lane. TSP is a great company and they have great products, but Lane is the man when it comes to exhaust setups. Plus he's right down the street from me
Reply
Old Dec 25, 2004 | 08:26 AM
  #4  
Keenov's Avatar
11 Second Club
iTrader: (5)
 
Joined: Mar 2004
Posts: 1,335
Likes: 1
From: Virginia Beach, VA
Default

TSP Duals



Nuff said
Reply
Old Dec 25, 2004 | 10:54 AM
  #5  
GuitsBoy's Avatar
TECH Senior Member
iTrader: (4)
 
Joined: Apr 2003
Posts: 6,249
Likes: 3
From: Long Island, NY
Default

I put 45º - 90º - 45º bends going under the axle so that it goes out to the sides and tucks just behind each wheel. The exhaust comes back towards the center so if you dont mind doing a makeshift center mount exhaust tips, it works perfectly. The bottom of the bends hang down just about as much as the front air dam. I just had winter tires put on and the axle just kissed the bends when it was fully extended, but it didnt bend the exhaust out of recognition. And even if it does, the bends will just "rotate" a little, assuming that you used clamps rather than welds. I really like the setup and it dosnt scrape. Works really well.
Reply
Old Dec 25, 2004 | 02:20 PM
  #6  
TooSlow02's Avatar
TECH Apprentice
 
Joined: Dec 2004
Posts: 349
Likes: 1
From: Scottsdale, AZ
Default

Originally Posted by natronathon
I am lookin at purchasing a tsp true duals set up 3 inch, with borla 18 inch bullets. How far back towards the rear axle does this set up reach? Is it safe to put exhause tubing under the rear axle due to the fact that the axle needs room to move up and down depending on road condition? I was thinking that the duals dumped before reaching the axle, but I dont know for sure, I am also assuming that 3 inch is too big to go over the axle. Any info on this setup would be greatly appreciated. I am close to purchasing, but I want to make sure I know everything now, so as to advoid agrivating suprises later.

Thanks

Nathan
If you want dual 3" over the axle, BMR makes an upper panhard brace specifically for this setup. Looks better than that flimsy stamped steel brace, too.

http://www.bmrfabrication.com/phr/Uphr-installed2.jpg
http://www.bmrfabrication.com/phr/Uphr-installed.jpg
http://www.bmrfabrication.com/phr/UpperPHR.jpg
Reply
Old Mar 2, 2005 | 05:49 AM
  #7  
Sik2000T/A's Avatar
Teching In
 
Joined: Jun 2004
Posts: 25
Likes: 0
From: Tucson
Default

Even with the upper panhard brace do you think you can get 3 inch pipes over the driver side of the axle. I currently have 2.5 inch pipes going over each side of the axle.
Reply
Old Mar 2, 2005 | 10:26 PM
  #8  
Phoenix 5.7's Avatar
TECH Junkie
iTrader: (7)
 
Joined: Aug 2004
Posts: 3,809
Likes: 0
From: Prairie de Femme, LA
Default

wasn't corsa working on a full TD system?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 2, 2005 | 11:05 PM
  #9  
92SilverSHO's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Mar 2003
Posts: 1,162
Likes: 0
From: Bensalem, Pa, now montreal, Quebec
Default

how come noone can make a TD out the back for under 600 bucks? i know ive seen some people get their pipes out the back from the dumps for like an extra 150 or so. I wouldnt mine spending like 700 bucks or so on a TD out the back. but everyone in the NE wants like 1000-1200!!! thats nuts!
Reply
Old Mar 3, 2005 | 12:16 AM
  #10  
01TAFlyer's Avatar
TECH Apprentice
iTrader: (4)
 
Joined: Oct 2004
Posts: 356
Likes: 0
Default

Originally Posted by 92SilverSHO
how come noone can make a TD out the back for under 600 bucks? i know ive seen some people get their pipes out the back from the dumps for like an extra 150 or so. I wouldnt mine spending like 700 bucks or so on a TD out the back. but everyone in the NE wants like 1000-1200!!! thats nuts!
Because these cars were never designed to have true duals done out the back, and to make a kit, that will work well in mass production, is going to be difficult. To be done correctly it really needs to be done custom, which is why it costs so much. You should be able to get a reputable exhaust shop to do a setup, at least under the axle, for less than $1000. Mine dumps under the axle and I think it is fine, thing again it doens't really matter here about where the exhaust comes out, while it does in some areas.
Reply
Old Mar 3, 2005 | 01:28 AM
  #11  
hugger1975's Avatar
11 Second Club
iTrader: (3)
 
Joined: Sep 2004
Posts: 739
Likes: 24
From: Naperville
Default

Reply
Old Mar 3, 2005 | 03:00 AM
  #12  
ZR2877's Avatar
TECH Fanatic
 
Joined: Jun 2002
Posts: 1,654
Likes: 0
From: Ga
Default

Hugger1975 that's some great clearance you have there. I hope to have the same next week.
Reply
Old Mar 3, 2005 | 11:35 AM
  #13  
Phoenix 5.7's Avatar
TECH Junkie
iTrader: (7)
 
Joined: Aug 2004
Posts: 3,809
Likes: 0
From: Prairie de Femme, LA
Default

bassani is the one with a tru dual system out now, all the way out the back, a little different then the other true dual systems, but its a nice option. thread about ithere
Reply
Old Mar 3, 2005 | 12:02 PM
  #14  
hugger1975's Avatar
11 Second Club
iTrader: (3)
 
Joined: Sep 2004
Posts: 739
Likes: 24
From: Naperville
Default

Originally Posted by ZR2877
Hugger1975 that's some great clearance you have there. I hope to have the same next week.

i have not touched the stock springs/shocks at all.


seems there is room to kill my 4x4 mod.........

can prolly go .75-1' drop still
Reply




All times are GMT -5. The time now is 10:31 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE