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streetk14
09-21-2006, 07:19 PM
I am planning out a new exhaust system for my blown LS1 '68 Camaro project. I will be using a HTH truckarm rear suspension (I know there may be better track suspension designs out there, but this is the route I've decided to go). The motor should be pushing over 600 hp at the flywheel, so a dual 3" system makes sense.

I want to run the exhaust out the sides, exiting before the rear tires. I think it looks cool, and makes it very easy to remove the exhaust system to work on the car opposed to a full rear exit system. The only problem is, where the mufflers are mounted makes it nearly impossible to run a crossover of any type.

I have always had crossovers on my car (had an H-pipe, then an X-pipe). I liked the sound of the H-pipe better, but I can say the X-pipe did quiet the system down. I am worried that a 3" side-exit system with no crossover will be very loud.

There is a red '69 camaro on the cover of the new chevy high that has a system like this. He was running a set of flowmasters and a set of resonators after that. I am thinking of doing something like that. Maybe a set of standard mufflers (50 series flows or spintechs), and maybe a resonator or bullet muffler after that to help keep the noise down.

Ideas, coments or suggestions anyone?

Andy

redss86
09-28-2006, 05:11 AM
I am in basically the same boat. I have an 86 Monte SS w/ t/a setup, and a t56 trans. I also have no room to put any kind of x or H pipe in my exhaust. I have bought a delta 50 series low profile type muffler to try using, along w/ the oval tube exhaust (clearance issues). I probably have more problems than others because of the extra bracing I have coming off the t/a crossmember. Here are some pics of my frame setup and pics of the under side w/ the body on the frame.

streetk14: sorry, I'm not trying to steal your thread. I am just needing to know the samething you are.

Any and all help is appreciated,
Joe

https://static1.pt-content.com/images/pt/2006/09/pics156-1.jpg
https://static1.pt-content.com/images/pt/2006/09/pics156-1.jpg
https://static1.pt-content.com/images/pt/2006/09/pics131-1.jpg

streetk14
09-28-2006, 08:52 PM
I know I have some options. I can run a full exhaust out the back, and while it may be tight, I have seen it done on cars with the HTH rear suspension.

I like the idea of the side exit system, mainly because it makes removing the system very easy if needed. My old rear-exit x-pipe system had to be cut off to be removed.

My problem is that I have always been very picky about how my car sounds. I've had H-pipes, x-pipes, turn-downs, full tailpipes, and quite a few different mufflers on my car over the years. The X-pipe sounds sweet at WOT, but sounds funky at certain rpms at light load. I would probably choose an H over an X for sound quality.


Right now I'm thinking of running dual 3" side exit exhaust (no crossover), a set of bullet race mufflers, followed by a set of full size mufflers (maybe 50 series flows). I'm hoping it will sound decent, and not make me go deaf. We'll see.

Andy

Mr.VENGEANCE
09-28-2006, 09:48 PM
i have side exhausts..

https://static1.pt-content.com/images/noimg.gif

streetk14
09-29-2006, 11:58 AM
i have side exhausts..

https://static1.pt-content.com/images/noimg.gif

How did you run your system, and what mufflers did you use? What do you think of the sound? Thanks

Andy

Mr.VENGEANCE
10-01-2006, 07:05 PM
I have a flowmaster and custom mandrel the piping.. the sound is orgasmic!

aint an alarm safe around her..

XCESSIV
10-02-2006, 11:35 AM
They have the completet kit like eleanor mustang , they also make the boom tubes for NASCAR which I have on my GN
www.drgas.com

chicane67
10-02-2006, 12:18 PM
Boomtubes for this application... all the way.

http://www.drgas.com/store/home.php?cat=2

(Thanks Xcessiv, I thought I would just throw in the direct link.)

Z06killinSBF
10-02-2006, 12:23 PM
I guess I dont understand why you dont have room for a cross over pipe? Spintech has mufflers that enter and exit out of the same side just for side exit kits.

redss86
10-02-2006, 02:38 PM
I guess I dont understand why you dont have room for a cross over pipe? Spintech has mufflers that enter and exit out of the same side just for side exit kits.

I don't have room due to ground clearance issues. I have looked at the Spintech and Dr. Gas setups, and I don't think I can clear them(low car/low braces). If I were to use the dr.gas x-pipe, and boom tubes, I would have absolutely no room for mufflers. I know they make boom tube mufflers, but at $270 ea. I cannot afford them. I did buy a set of regular boom tubes off ebay, I am affraid they are too long. I still have to get w/ my exhaust guy and see what we can do.

JMarsa
10-03-2006, 06:38 PM
Right from HTH website:

https://static1.pt-content.com/images/noimg.gif

Room enough for an X-pipe, side exit or rear exit. Pic is from a Camaro.

--JMarsa

streetk14
10-07-2006, 08:08 AM
Right from HTH website:

https://static1.pt-content.com/images/noimg.gif

Room enough for an X-pipe, side exit or rear exit. Pic is from a Camaro.

--JMarsa


I know that you can run a full rear-exit x-pipe system with the HTH truckarm suspension. My thing is that I really don't want to run the exhaust that way this time. I am trying to make this car easy to work on, and service driveline parts if need be (and with 600hp going through my T56, it will probably be the case). I had to chop off my old rear-exit x pipe system to remove it from the car. I guess I could have it built with ball/socket connecters so I could drop out the x-pipe if works needs to be done. Hmmm....

streetk14
10-07-2006, 08:15 AM
I guess I dont understand why you dont have room for a cross over pipe? Spintech has mufflers that enter and exit out of the same side just for side exit kits.

I don't think their kit will work for me. I have looked into it, and it seems that the exhaust tips would have to cross over or under the truckarms (from the center of the car to the rocker panel area). I think they would get in the way of the suspension travel, or hang really low.

I need to find some pics of the red '69 that was in the latest Chevy High Performance. I don't think they are up on their sit yet, but that is the idea I'm after. If I can find them, you will see what I'm talking about with the crossover issue.

Andy

streetk14
10-07-2006, 08:36 AM
Boomtubes for this application... all the way.

http://www.drgas.com/store/home.php?cat=2

(Thanks Xcessiv, I thought I would just throw in the direct link.)

Thanks, that's a cool idea. It looks like the street boom tubes might be the way to go: http://www.drgas.com/store/product.php?productid=137&cat=2&page=1

Do you have any pictures of how these look on a car? Dr Gas claims they are good to 700 hp for dual systems, so that should work fine. Any ideas about noise level and sound? I'd like to keep the noise to a sane level, the cops around here having nothing better to do :guilty:

Andy

streetk14
10-07-2006, 08:40 AM
Here is the picture of the exhaust system I've been talking about : http://www.chevyhiperformance.com/featuredvehicles/0611ch_1969_chevrolet_camaro/photo_06.html

See how a crossover might be tough? As much as I'd like to run one, I just don't think it's possible. Ideas?

Andy

JMarsa
10-07-2006, 08:41 PM
I don't get the car in CHP. Why the muffler and then the cat? Doesn't seem that there would be enough heat for the cats to work right.

BTW, I've got a truck arm kit but it's not installed yet. I plan on using a crossover like this Dr. Gas one and sending one banks exhaust to the other side. I'll have cats and plan on using a muffler/resonator after the cats just before the dump in front of the rear wheel.




https://static1.pt-content.com/images/noimg.gif


--JMarsa

chicane67
10-08-2006, 01:21 PM
Or one of these three......... at least you have some options.

https://static1.pt-content.com/images/noimg.gif

https://static1.pt-content.com/images/noimg.gif

https://static1.pt-content.com/images/noimg.gif

Z06killinSBF
10-08-2006, 01:51 PM
How loud are the boom tubes? I have dumped 2-chambers right now. Would it be louder or ALOT louder?

a73formula
10-08-2006, 09:23 PM
i did the 3" x pipe then 3 1/2" out of the x pipe into the boom tubes behind my 455. the dr. gas guys said it would be loud than my 2 chambers. Its the same as the nascar exhaust accept the street boom tubes have the spintec type muffling welded in. haven't driven it yet though so couldn't tell you how loud for sure.

nitrovette
10-09-2006, 04:15 AM
I run hooker 4 inch sidepipes on my 73 vette with my ls1 with 1 7/8 primaries and augger style mufflers and its not that bad ,its actually enjoyable,now itll be different when i swap my thunder racing cam in this winter.(ls6 cam now)Now last month i removed the mufflers and drove it to a show and it was way too loud for me.

JMarsa
10-09-2006, 06:42 AM
I love side pipes and might still do some. I want to run cats and I know that there are some pipes for Cobra kits cars that have cats built in. I'm too far away to make a decison yet on this though.

--JMarsa

streetk14
10-09-2006, 07:53 PM
I don't get the car in CHP. Why the muffler and then the cat? Doesn't seem that there would be enough heat for the cats to work right.

BTW, I've got a truck arm kit but it's not installed yet. I plan on using a crossover like this Dr. Gas one and sending one banks exhaust to the other side. I'll have cats and plan on using a muffler/resonator after the cats just before the dump in front of the rear wheel.




https://static1.pt-content.com/images/noimg.gif


--JMarsa


It says in the article that they are resonators, not cats. The motor in that car is a carb'd 406 small block, so cats probably wouldn't be a good choice.

Although, I have thought about running cats on my motor after it's all dialed in. It would be kind of cool to have a clean running musclecar that can kick some ass.

streetk14
10-09-2006, 07:57 PM
Or one of these three......... at least you have some options.

https://static1.pt-content.com/images/noimg.gif

https://static1.pt-content.com/images/noimg.gif

https://static1.pt-content.com/images/noimg.gif

It would be nice to find something that will work. I will definitely do an x-pipe if I can get it to fit. The problem I see is trying to get the pipes in and back out of the crossover before you get to the front of the truckarms. I guess we'll see what Steve at HTH has to say.

Andy

vcho455
10-20-2006, 10:23 PM
Just some food for thought. I used the truck style band clamps on the exhaust on my Javelin at the header collector (I cut off the flanges) and after the mufflers on the vertical tubes over the axle. This allows me to remove the exhaust under the center of the car in about 10 minutes. I have hangers directly behind the mufflers that I modified so they can unbolt easily. After almost 19000 miles (with the tranny pulled twice) I'm still pleased with the set up.

redss86
10-23-2006, 02:59 PM
Yeah, I like the street boom tubes also, but at $300 each I cant afford that. Guess I am stuck w/ building my own custom exhaust/tips.

Railing68
10-23-2006, 03:53 PM
Dr. Gas makes a ball and cone kit, I ended up using it with my pypes x pipe system and I am able to remove the system before the diff when needed and still have a full length system with rear exit. SS