ExhaustPost your questions and suggestions about stock or aftermarket exhaust setups. Third Gen exhaust sound files and videos!
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After a long time of the original picture collection being down I've finally put it up again. I'll be adding more pictures and redoing it all pretty soon ...I'm kinda lazy though.
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Willy, how much did it cost to get that system done? Do you think it was worth it for the performance and sound?
Matt,
Before I had my exhaust done, no one I knew of had accomplished a true dual setup using the stock routing. Also, no one I knew of used a pair of chambered mufflers. All the pics of other systems I saw were crude, at best -- most had so little ground clearance that I would not be able to drive into my driveway. Most had mufflers hanging so low they were tacky looking. I like doing things slightly differently and decided that I was going to make it happen. I like to think I accomplished this. Because mine uses stock routing, ground clearance is not an issue and all the pipes look like they belong where they are.
It turns heads wherever I go. As for performance, I do not have before and after runs with only the exhaust being the difference. Therefore, I cannot quantify the improvement, if any.
The complete system was not cheap, but I did NOT cut any corners. I used very expensive mufflers and bought six 180 degree mandrel bends (to be cut to desired length by the installer). I also used a pair of Flowmaster "Ys" to act as an "X" pipe. The shop I had the work done charged $60 per hour, which included the straight sections of pipe. It took them five hours.
To minimize the cost, have the shop supply and bend all the pipe and do not use an "X" pipe. Also, use a much cheaper pair of mufflers and the cost would probably be half of what my total was.
We should make this a sticky. 88IROC350TPI, that is an excellent site with all the pics of dual exhaust from TGO, very nice, it's going in my bookmarks...
sweet! I was just trying to decide on a way to run a true dual exhaust and I wanted to do it along the stock exhaust location...what I was wanting to do is already pictured so it will make it that much easier to do! Thanks for those great pics!
Hey man whats up i was just wondering, do you have any more information on the red camaro that is first shown on that exuast page of yours that has dual 3" into X-pipe and out to 3.5" dynomax bullets. Is he a body or have a web page that has info on that car. I was just wondering bc i want to find out what size of rims and tires he has out in the rear. and just want some more pictures of his car, bc it looks good. I have a red z28 91 and it looks just like it minus the rims and hood. hope u can help, cya
I have a question that may sound redundant, but I'm gonna ask it anyway cause I have limited experience and I am not a third gen specialist.
I am looking at going true dual exhaust. I have a 1989 Firebird LO3 305 V8 Automatic that is in stock condition. I am wanting to do a whole new exhaust system to help my engine breath easier. Now, keep in mind, this is just a little 305, so I am not planning on going too crazy on spending. I figured that I would go either hooker or hedman headers. I will probably go with hedman because of the price.
From my repetitive searches I have found the following to be the best for my application. And I live in Tennessee with no emissions.
For my 305 I would need, 1 5/8 inch primary long tube headers, 2.5 inch pipes, and X pipe. As I said before I will probably be going with Hedman long tube headers. From there, I believe I read that I need to use their X-tensions. I would like to run the pipes down the center of the car and dump like either in the middle or out in front of the rear tires like a side exit.
My question is this:
It looks as if there is room to run two pipes along the middle of the car, you would need them to go around the transmission pan. This is where the problem is, there is metal braces or something around part of the Trans pan preventing me from having one of the pipes following in the groove. Can I remove some of this metal bracing? Can I relocate to a different side or something? I am not sure what that stuff is for, but I believe if that stuff if gone, that I will be able to have two pipes leave the headers and stay in the groove and go around the Trans pan and on down the car. This seems like the worst problem for the piping. I haven't done anything yet. I am in the developing stages of figuring out what I am going to do. I want true dual. I will probably use some loudmouth style mufflers. Can anyone point me in the right direction?
I will probably jet coated hedman headers, any suggestion as to what type of hedman? They have street, step, Extreme duty, and race headers. I don't know which one to pick.
Here are some pics of some other Hedman exhaust stuff that I need your opinion on if you think I would need this or if it would help my project.
Maybe, but I want true dual. I want to get as much power out of my little 305 without compromise. Also, I like the idea of side exits or something like that.
heh ...well, looks like the site might be goin down soon unless, of course, someone wants to host it on a real server
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I'll post pics of mine tommorow. I had a custom mandrel bent 3inch X pipe system with the traditional muscle car routing, and they had to install the mufflers in the rear location where the factory crossflow was installed. With hooker long tube headers, 3inch piping, x pipe and 3inch stainless magnaflows, it sounds badass. My car is lowered too, and it doesn't have any clearance issues except over steep dips or big speed bumps, which I can manuever over. I was really amazed at how the shop (eastside performance exhaust) tucked up the dual 3inch pipes so well on a thirdgen of all cars.
__________________ 95 s10 short bed std. cab: 355 V8 conversion, heavily ported Vortec heads, Comp Roller cam, 440HP, custom short block, forged H beam rods....hair dryer setup in the works.
2002 GSXR-1000. Full exhaust, pair-mod, PCIII, porting, 170+HP to the rear wheel..........380 pound wet weight!
you know, i thought that they would be louder than they are. inside i can still have a conversation with someone, they are really mellow for being a race muffler. i am not saying they are not quite by any means, but they are not obnoxiously loud. and they have a really cool bark when you step on it. i wish i knew how to post videos.
I have duals with 3" center in/out aerochambers and it's kind of loud. You can see right through the mufflers... Got a pic of it around here, I'll try and scan it in sometime. Anyways, I've been thinking hedman longtubes and the morosos. From everything I've heard they're more bassy than actually loud (unlike the bullets which barely muffle). I honestly don't think they're louder (or not by much) than my hookers. To have a converstaion in my car you have to raise your voice quite a bit. My dad doesn't even like riding in my car cause he says it's too loud, lol and he's a car guy! So what's your opinion 66nova? Oh, sound clips would be cool too...
here's my old one from last year (last spring 2002) my new exhaust (end of spring) consists of those same Muffs as Willie which are the Stainless Specielties Chambered Tube.. but this is the old setup....all 2-1/2" piping, 2 Dynomax Cats 2-1/2, 2 40 Series Flowmasters, out of side exits, 2 Borla Intercooled slash tips., surprisingly there was a fair amount of room under the car except that the mufflers were a lil too low, so that's why i got the chambered and there's alot more room now (no scapping or having to worry about it all the time)
__________________ 87' Iroc-Z, 350 TPI, 700r4, 3.23 Posi Rear, World Torquer Sportsman II, Compcams Xtreme (.502 in .510 ex) , Z06 Rims 17*9.5 315/35/17 R 285/40/17 F, Quarter panels replaced car painted 2001 Plymouth Prowler Red, various things
Originally posted by kfoley I have duals with 3" center in/out aerochambers and it's kind of loud. You can see right through the mufflers... Got a pic of it around here, I'll try and scan it in sometime. Anyways, I've been thinking hedman longtubes and the morosos. From everything I've heard they're more bassy than actually loud (unlike the bullets which barely muffle). I honestly don't think they're louder (or not by much) than my hookers. To have a converstaion in my car you have to raise your voice quite a bit. My dad doesn't even like riding in my car cause he says it's too loud, lol and he's a car guy! So what's your opinion 66nova? Oh, sound clips would be cool too...
currently no sound clips, i don't no how to post them though, even if i did have a recent one. i have a video with open exhaust, but that's it. anyhow. yeah, they muffle alot better than the bullets, but they are still pretty loud(but ya know what? i'm a 19 yearold kid having fun!)
Originally posted by iroczrockz Hey you guys what kind of muffler is that, that is used on either side of the gas tank? Looks small and discreet. That isn't made by Borla is it?
The pic is of my car. The mufflers are made by Simons. Yes they are small. No they are not discreet by far. The sound they make is so loud, that when I go to my mothers at night time I wake up the whole neighborhood. I love it though (sorry for the spelling)
heres my true dual pics CLICK ME I did the best i could ill put up some more in the next few days its really hard when the car is only a foot off the ground though. Ill also get some pics soon of where it goes over the rear axel soon. If anyone has any questions about the routing of pipes or anything feel free to ask and ill answer/get more pics to show ya. Also remember this is all through stock pipeing and i dont have knowledge about pricing or anything because the previous owner had it done.
*UPDATE* the moroso spiral mufflers are mean sounding, but after driving for the last 4 days, i have found them to be annoyingly loud on the roads, cool for the race track, too much for the road. i will be upgrading(or downgrading) to a set of dynomax superturbo mufflers. i will let you know how they sound and i will post some pics after i get them installed...
man i bought them since they were quiter than the bullets....don't know til i fire the motor up i guess for what i consider too loud.
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Here's a pic of mine. I borrowed willy's idea for the duals down the stock routing, but mine are slightly different.
You can see a description of how we did it, and a bunch more pics at my website in my sig.
I'm working on getting some pics of it mounted up on my car, but I made a design error on the front part so it hangs down about 3" lower than it should. As soon as I trim up the pipe I'll take some pics of it.
__________________
1987 IROC-Z 305/5 speed
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-305 block .040" (312 cid), Speed Pro hypereutectic pistons, stock rods; shot peened/polished with arp rod bolts
-Hedman shorties and Y pipe
-Hooker 3" Catback minus cat
-Edelbrock Vic Jr converted to MPFI; gasket matched, mild port and polish
-Holley 750cfm throttle body (modified)
-26lb/hr delphi fuel injectors
-Comp Cams Hyd. Roller cam 262hr-12
-Holley Annihilator CD ignition
-Holley LaserShot Pro coil
-Summit 8mm spiral pro wires
-Fluidamper 7" balancer
-Cast aluminum timing cover
-March Billet underdrive pulleys
-7730 ECM conversion and DIY PROM burning using TunerProRT and PPII
-World Products SR Torquer heads, full port and polish, Manley stainless 1.94/1.50 valves, high flow valve job
-GM 3.23 gears
-T5 swap
-Centerforce dual friction clutch
-VDO and autogage instruments in custom acrylic gauge panel
-Minor weight reduction including: A/C removed, smog removed, front sway bar removed, undercoating removed, stereo removed, most carpet padding removed, and wonder bar removed.
-255gph walbro in-tank fuel pump
-edelbrock fuel rails
PARTING OUT, CHECK OUT MY THREADS ON THE CLASSIFIEDS BOARD
these are not the best pics but
on the right side this is where the header meets the pipe.
this is on the left side in order going from the header to the glasspack. from the glasspack it used to turn out and come out under the gfx but i cut it off right behind the glass pack
I wish I had better pics. that and better exhaust like willies but maybe someday.
edit- i forgot to mention that is on the 85z
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way outdated
85z28
Chad
damn, i've only personally seen a true dual setup a few times on a 3rd gen, one was with some vette sidepipes and the other was my old setup with 2.5" side pipes off my shortie headers.
I'm just running a 2" crossover off the shorties Y'ed into 3" through the stock channel split into dual 2.5" at the back. No muffs
Yes, Hooker (hok-2460 - summit) shorties and a T-5. The picture above it is of the same car, which is a formula firebird (not that it really makes a difference...).
__________________ "It may look like I'm doing nothing, but I'm actively waiting for my problems to go away."
- '87 Formula Firebird - never ending project
- '91 RS Camaro - beater
- '93 Z28 - donor
- '71 Camaro LT - as if I need another project.....
__________________ NEW BABY AS OF 9/28/02
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To much money invested HAHA
Daily Driver As Of 11/9/2007 1990 Formy 305 TPI, Auto, 2.73s, custom magnaflow catback, filter, pulleys
*RIP 7/30/04*OLD BABY Red 1989 T/A WS6 with a TPI 305, 10 bolt 3.73, auto.
