Longtubes into duals
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 86
Likes: 0
Car: 1985 Camaro Z28
Engine: Work In Progress
Transmission: 700R4/2200 stall/Shift Kit
Axle/Gears: 7.5 Richmond 3.73/Gov Loc Posi
Longtubes into duals
Hey does anyone know if I can tell my local exhaust shop to run 3 inch (preferably) or 2.5 inch pipes out of my 1 3/8 long tubes into mufflers and dump it down in the middle of the car instead of going all the way back or will they say they just can't do it? I have seen 3rd gen camaros with true duals. I don't want it going all the way back though.
So would I just say run the pipes out of the headers and bring them together and run them down the middle of the car into an X pipe to mufflers then dump them down before passing the rear tires? What do you think I should tell them?
TIA
So would I just say run the pipes out of the headers and bring them together and run them down the middle of the car into an X pipe to mufflers then dump them down before passing the rear tires? What do you think I should tell them?

TIA
Supreme Member
iTrader: (2)
Joined: Mar 2002
Posts: 2,516
Likes: 5
From: San Antonio TX
Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: Longtubes into duals
Hey does anyone know if I can tell my local exhaust shop to run 3 inch (preferably) or 2.5 inch pipes out of my 1 3/8 long tubes into mufflers and dump it down in the middle of the car instead of going all the way back or will they say they just can't do it? I have seen 3rd gen camaros with true duals. I don't want it going all the way back though.
So would I just say run the pipes out of the headers and bring them together and run them down the middle of the car into an X pipe to mufflers then dump them down before passing the rear tires? What do you think I should tell them?
TIA
So would I just say run the pipes out of the headers and bring them together and run them down the middle of the car into an X pipe to mufflers then dump them down before passing the rear tires? What do you think I should tell them?

TIA

Member
Joined: Oct 2009
Posts: 374
Likes: 2
From: Ankeny Iowa
Car: 84 Camaro
Engine: 357
Transmission: TH350
Axle/Gears: 4.10's / Strange LSD
Re: Longtubes into duals
Depends on the shop and the laws where you live. I was an inspector when I lived in Oklahoma and the pipes had to come out from the car either right in front of the rear tires or out the back somewhere with no exceptions(well unless you were a friend of mine) but I heard they don't have inspections anymore. I live in Iowa and we don't have them here. I know you didn't ask but I don't think its worth the trouble to run duals not to mention long tubes, They make some pretty good exhaust systems for our cars but the long tube headers are a pain, In my opinion shorties on a car with less then 500hp are just fine but again that's my opinion
Mark.

Mark.
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Longtubes into duals
Have a look under the car and see how much room there is to do what you're proposing, first.
Joined: Jul 2007
Posts: 135
Likes: 23
From: Grand Rapids, MI
Car: 88 Trans Am Hardtop
Engine: 350 L98
Transmission: Stock 700R4
Axle/Gears: 3.27 Aussie 9
Re: Longtubes into duals
Naysayers. It can be done but you do scrape on everything. Here are pictures of my old car with Hooker long tubes, 2.5" pipe, H-pipe and flowmasters.




Junior Member
Joined: Mar 2013
Posts: 13
Likes: 0
From: portage indiana
Car: 1987 firebird formula
Engine: 350
Transmission: 700r4
Axle/Gears: stock with 373
Re: Longtubes into duals
yes you can but I put 2"1/4 but im going with 3" next week and it sounds good with the 2"1/4 pipe
Junior Member
Joined: Mar 2013
Posts: 13
Likes: 0
From: portage indiana
Car: 1987 firebird formula
Engine: 350
Transmission: 700r4
Axle/Gears: stock with 373
Trending Topics
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 86
Likes: 0
Car: 1985 Camaro Z28
Engine: Work In Progress
Transmission: 700R4/2200 stall/Shift Kit
Axle/Gears: 7.5 Richmond 3.73/Gov Loc Posi
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 86
Likes: 0
Car: 1985 Camaro Z28
Engine: Work In Progress
Transmission: 700R4/2200 stall/Shift Kit
Axle/Gears: 7.5 Richmond 3.73/Gov Loc Posi
Re: Longtubes into duals
Depends on the shop and the laws where you live. I was an inspector when I lived in Oklahoma and the pipes had to come out from the car either right in front of the rear tires or out the back somewhere with no exceptions(well unless you were a friend of mine) but I heard they don't have inspections anymore. I live in Iowa and we don't have them here. I know you didn't ask but I don't think its worth the trouble to run duals not to mention long tubes, They make some pretty good exhaust systems for our cars but the long tube headers are a pain, In my opinion shorties on a car with less then 500hp are just fine but again that's my opinion
Mark.

Mark.
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 86
Likes: 0
Car: 1985 Camaro Z28
Engine: Work In Progress
Transmission: 700R4/2200 stall/Shift Kit
Axle/Gears: 7.5 Richmond 3.73/Gov Loc Posi
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 86
Likes: 0
Car: 1985 Camaro Z28
Engine: Work In Progress
Transmission: 700R4/2200 stall/Shift Kit
Axle/Gears: 7.5 Richmond 3.73/Gov Loc Posi
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Longtubes into duals
There are many many members running true dual exhaust, really isn't that difficult. Isn't there a whole sticky dedicated to it? I have mine dump out just before the rear axle, I don't have an exhaust smell.
Thread
Thread Starter
Forum
Replies
Last Post











