jasonbennett

All right guys, I have been reading all these posts on true duals. Instead of paying at least $300 to have an exhaust shop do a hack job most of the time, why don't you guys look into chambered exhaust for 1st gen Camaros. It is a true dual system and will give you the muscle car sound you are looking for. Of course there will be some modifications that will have to be done. But it will get you close. I have been working on a diagram for true duals under 3rd and 4th gens. If ou guys want to check it out let me know an I will post it on here. Will give mufflers used and stuff like that.

jasonbennett

some parts

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more parts

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yet more

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last one

jasonbennett

most of the system will run the length of the tranny tinnel. you can either run the mufflers along the driveshaft or in the stock position with some creative bending. if you use turbo style mufflers instead of bullet mufflers, then they will have to be small case, like 2 chamber flows.

jasonbennett

a first gen chambered exhaust system

jasonbennett

4th gen kit, might be able to adapt this to thirdgens. this kit is from braxxton and i just found that they make these for 4th gens. pretty interesting that someone has already made a kit fro them and not 3rd gens

Mike89GTA

Where did you find the one above #4. I know 4 is the flowmaster one (the one I just ordered) but I like the one above that.

deadbird

Because paying $500+ (YearOne.com) for an exhaust that doesn't fit, then chop it up to fit a 3rdgen is not a cheaper or better alternative. Dual exhaust is either going to be cheap and 'easy' because one has the skills and eqipment to make it or, you're going to have to pay someone and it's going to cost. There are not many options for these fossils we drive.

I spent right around $150 making mine (not including headers) which I am happy with. Willie has spent a generous amount on his exhaust and it shows but, I believe he had someone fabricate the system for him. I spent right around $150 making mine (not including headers) which I am happy with. The only thing I don't care for is the ultra-bass tone I get at idle due to the length of 'pipe' off the ends of the mufflers (will be changed soon).

LT1guy

iTrader: (1)

GMMG offers the chambered exhaust for 4th gens, though its not a true dual setup. Its the same one they install on the Berger SS, Intimidator SS, and Carl Black Blackbird. Bruce Hawkins (hawks Thirdgen) has one on his 92 Formula LS1/6 spd car, and it sounds great. Not a bolton to a thirdgen, but close.

jasonbennett

Mike: the second and third are from Dr Gas

Deadbird: i'm just spitting out ideas. the exhaust set up on your car is the exact set up i'm talking about. i just want to mass produce it with different muffler options. you set up is very nice. i know people have put considerable amount of time and money into there exhaust system. i'm not knocking them at all. i just don't see why someone should mickey mouse there set up just to put true duals on. hope i didn't step on any ones toes. that wasn't meant by me posting this, it was just meant to give people ideas.

LT1guy: that might be something to look into. thanks for letting me know

deadbird

jason... I realize your intention and wasn't aiming to shoot it down or be harsh. I've been asked about my exhaust (as I'm sure a number have).
The problem I realized in making a 'universal' dual exhaust is, these cars don't have the uderside space for anything universal except a stock type exhaust which, is the beauty of Willie's setup.
For what I have, you'd have to accomidate for every header available plus, for auto of manual. In my case, I modified my tranny x-member to assure I would have no loss of ground clearance. This is not something you could gaurentee for eveyone. The underside of these cars are very unforgiving for space which is why single systems fair so well, a 'cat-back' system is designed to replce factory routed exhaust. Most headers are made with the same thought so when combined, the only variable is the converter.
To add to the problem, a 'standard' dual setup such as mine (or others with a shortened version) cannot comply with state to state emission standards since there is no real space to add converters.
If you were to make a 'production' dual setup, you shold coonsider Willie's, his is nearly perfect. The only part I don't like of his is the drivers side pipe routed under the oil pan (like OEM). That was one of the few reasonns for me making mine the way I did.
I can also tell you this... you will not find any mufflers that fit or are like mine. Any of the ones you can buy similar.. will barely fit if at all where I have mine. I believe it's CheezX has a similar setup to mine except it runs under his axle and he has dynomax bullets but it's still a tight fit.

deadbird

Not that anyone gives a damm either but, here's my ground clearance....

xpndbl3

iTrader: (5)

do you have a pic of your trans crossmember and could you elaborate on how you modified it?

Willie

iTrader: (1)

Jason,

I don't know if you've already seen my setup. If you haven't, click on "SC Z!!" in my sig. It is a true 2-1/2" dual using a pair of polished chambered mufflers (in the stock location). It is similar to the GMMI rear section and the fourth gen setup you posted a pic of above. The difference being mine is a true dual system, not one that bolts (welds) to a single 3-inch intermediate pipe.

And here's a pic of my rear section removed from the car via a pair of slip-joints:

1bad91Z

iTrader: (1)

Willie, did you ever get any dyno numbers or track times with the new charger? Not that my opinion matters, but it turned out AWESOME! Nice job on the intercoolers and and custom filter box!

Curious about numbers,

Mike (1bad91Z)

Willie

iTrader: (1)

Not yet Mike. I ran into a stumbling block at around 10-psig. I started over with EPROM modifications, which necessitated recalibrating my Superfueler. Even with it maxed out with three 24# injectors, I was running lean. So I replaced them with three 72# units. Now, I'm running out of pressure even with two fuel pumps. My latest addition is a Kenne Bell Boost-A-Pump. If that doesn't cut it, I'll have to dig into my tank and replace that pump. I'm also going to replace my 3.73's with 3.23's, so...... it will be a while before I'm ready to rumble.

Willie

jasonbennett

i had been playing around with the way 4th gens are set up. ut make it true duals. i still have to put my car up and take measurements and spacing notes. i would like to mimic one of the set ups you guys are running. after all you guys are the ones that gave me the idea to do it. it will be difficult but if i get measurements from auto and stick shift car i should be able to piece them together and start building a prototype set-up. i really don't like glass pack type mufflers, i have a couple of examples in my postings. i would rahter use bullet types for the sound but i really want to use chambered mufflers from 1st gens. i think they are the smallest muffler that will fit up into the tranny tunnel and still have some good ground clearance. you guys have done some really nice work with these systems. thanks for pointing alot of things out that i didn't put in there. when these systems are built, there will be one for auto and one for sticks. not really universal, but just enough to spread 82-92 i hope. thanks guys.

D M N

willie i want to hear that setup post sound clips

2 dope

jasonbennett....where did you get the pic of the x-pipe? Its pretty sweet

Pepsicola

deadbird: In the second pic with the soda cans, is your car lowered??? I was looking on your website and that is a NICE setup you have. I like it a lot

DaGoat

Edit: nevermind, found it.

stupid4901

iTrader: (3)

Would it make a huge difference if the exhaust was not mandrel bent? I've found a bunch of people that have made Dual exhausts for thirdgens but none of them are mandrel bent. I got a price quote of 400 installed, is this good?

deadbird

Thanks bud, I appreciate that. In the picture, I have a set of RS springs. I sold my drop springs to TexasLT1 because they dropped my car way to low for my comfort. The front x-member was 3¾" off the ground. I had to drive my car up on stacked 2x4's just to get the jack back under it. The RS springs sit the car just under 5" at the x-member which is 1" lower than the WS6 spring the car originally came with (also rides smoother ). SO, I suppose the car is technically lowered but, not ? lol

DakotaSLT

Hey Willie, just curious because I'm thinking about adding the 4th gen tips to my car, but why are both of your tips oriented the same way? I thought they both faced in

Cliff

StreetRCR

Old pic............... NOT MY CAR