The Dodge Challenger Message Board

If your thinking about purchasing a complete exhaust system, I can tell you what NOT to buy: a header back system made by Magnaflow. I bought one and couldn't make it work, it didn't even come close. I ended up at a custom exhaust shop ( they tried to use at some of the pieces but gave up) and got a great s.s. system for about $800. TD

TD, I used TTI. When a company only makes parts for MoPars you know they have to be dedicated. I too got tired of Chevy and Ford engineered parts for our MoPars! Too bad you couldn't get many of the pieces to work, it's stainless steel isn't it?

I'm starting to think to get a new exhaust system myself. I have a "modified" 340 engine, X heads, 4 barrel, Hedman headers. Right now I have a 2,5" all the way I think, but I just found out there's a small rust hole in the left muffler. I fixed it temporarily and I will wait til after the summer here in Sweden to get a new system but I wanna start learning about the diffrences now. So, here's some questions.

I know that TTI are top of the line but I'm gonna have to count my money first...would you guys suggest me to stick with the 2,5 or change to 3"? Or is 3" mainly for big block cars?

I have also been wondering what other exhaust tips than the T/A and the "through the valance" style Challengers had from the factory. Or did all Challengers with dual exhaust come with the cutout rear valence? Since my car originally is a 318 I assume it only had a single exhaust and I can't remember ever seeing how the tip looked like on a single exhaust car. My valence looks like this now, any suggestions on exhaust tips? Or should I try to cut them out more to fit the "twin rectangle" tips?

Robert

Since your valence is already cut, why not save the money on TTI's "tips" and just get their exhaust system without the stainless tips. 2.5 is good to 500 H.P. then 3" above that. Do you plan on any serious upgrades? If so, then use the 3" now. Are you going to use their headers as well? I like Dougs Headers as well as TTI's and "may" be cheaper, Dave would know that. Also I would use the DynoMax Ultra Flos as opposed to TTi's DynoMax Turbo style,(they're too quiet) BTW, nice buttshot of your car.

Yes all the Challenger dual exhausts were the R/T style with the rectangular cut-outs. The others cars had a normal single tailpipe coming out under the valance panel.

Ok, thanks for the quick answers Eddie & Dave! I gonna have to think about this for a while. And save some money! Another factor is what's available in Sweden for a reasonable price too. I don't wanna know how much shipping of a whole X pipe system would be, not to mention headers...

Back to the Magnaflow system.

They do say

This system is designed to work with OEM-style exhaust manifolds, or tubular headers. Due to the various applications possible, some modifications and welding is required for a proper fit and finish.

Also it has non-R/T style round turn-down tips that exit under the rear vallance.

So how far off is it exactly? I ask because I was considering this system myself even though I knew it would have to be professionally fitted in part.

dave-r wrote:Back to the Magnaflow system.

They do say

This system is designed to work with OEM-style exhaust manifolds, or tubular headers. Due to the various applications possible, some modifications and welding is required for a proper fit and finish.

Also it has non-R/T style round turn-down tips that exit under the rear vallance.

So how far off is it exactly? I ask because I was considering this system myself even though I knew it would have to be professionally fitted in part.

I can´t help you with that. I thought I would pass on a question instead. What do you think about the system below?

From:
http://cgi.ebay.com/ebaymotors/ws/eBayI ... 947&rd=1,1

www.weldtechstainless.com

That x-pipe looks as if it would be right in the way of my GV overdrive.

I think now I might be better off buying stainless reducers, cut-outs, mufflers and tips from various sources and then get a custom exhaust place to make a system up from that.

I see they use Dougs Headers like the ones I bought.

Wonder why they didn't put what grade stainless steel they used 304 or 409? It's quite nice however, and probably would outlast the life of the car! 1655.00 retail, ouch, but you could get lucky with the "bay". You would think with as much money we put in our cars, other exhaust companies would offer 304 Stainless Systems and accessories every day! I think Dave has the best option however, for a stainless, "painless, system.

Hey Dave, Not trying to be to picky but just for info some Challengers came with factory dual exhaust and no cut outs. They had the turn downs as on the single exhaust.

Bob

Yeah I think you are right there. Like the 383 4bbl for instance maybe?

jh27n0b wrote:Hey Dave, Not trying to be to picky but just for info some Challengers came with factory dual exhaust and no cut outs. They had the turn downs as on the single exhaust.

Bob

It would be very intresting to see some close-up pic´s of that installation. Anyone?

I cannot find any diagrams of a dual pipe system for non R/T cars in the parts manual. Nor can I interprate the parts list clearly.

But it does look as if the 340 and 383 4bbl cars both got dual exhaust systems.

They may have been the same as the R/T systems with both the resonator and mufflers but with different tailpipes? or maybe they didn't have resonators?

It would be nice to see what an original would have looked like. But most would have been replaced long ago.

The 340 and 383 four barrel engines came with dual exhaust. They both had the resonators. The only difference was the mufflers. I believe the part numbers for the turn down mufflers is 3404557 and 3404558. The pictures are of my 383 four barrel car. My car came from the factory with dual exhaust but no rear tips/cutouts. They are not original components but a close representation of what they should look like. I drive this car and so I did not want nos parts.

Bob

That is excellent! Good photos too. Thank you.

It was the mufflers that really had me confused in the parts manual. I just couldn't get my head around it.

jh27n0b wrote:The 340 and 383 four barrel engines came with dual exhaust. They both had the resonators. The only difference was the mufflers. I believe the part numbers for the turn down mufflers is 3404557 and 3404558. The pictures are of my 383 four barrel car. My car came from the factory with dual exhaust but no rear tips/cutouts. They are not original components but a close representation of what they should look like. I drive this car and so I did not want nos parts.

Bob

Thanks a lot, Bob. Very intresting! Eventually I will build something similar myself.

Many thanks to Bob and Dave for the diagram and pictures. My 73 came with no exhaust system at all. I had no idea where to mount the heat shields or the muffler. The car is being painted at this time and should be ready for the road in a couple of weeks. My first stop is to be at the muffler shop. After 4 years of mechanical work I was able to drive it 20 miles to the restoration shop with only a set of headers and a couple of glass packs bolted to them. I can hardly wait to get it out of the shop and get to drive it home. While at the shop I have had the transmission rebuilt and the engine has been removed and resealed. Again Thanks to all using this board. without your help I whould not have progessed as well as I have.

jh27n0b wrote:The 340 and 383 four barrel engines came with dual exhaust. They both had the resonators. The only difference was the mufflers. I believe the part numbers for the turn down mufflers is 3404557 and 3404558. The pictures are of my 383 four barrel car. My car came from the factory with dual exhaust but no rear tips/cutouts. They are not original components but a close representation of what they should look like. I drive this car and so I did not want nos parts.

Bob

From an ad: NOS 70-71 Dodge or Plymouth E-body passenger side muffler for cars equipped with 383, 440 or 426 hemi engines. The inlet pipe is 2 ¼ inches.

Maybe of intrest to someone?

Thanks Christer. Where did you find this? How much $? I am always interested in original parts.
Bob

jh27n0b wrote:Thanks Christer. Where did you find this? How much $? I am always interested in original parts.
Bob

Hi Bob! I have sent you a PM.

//Chris

An old post I know but you guys didn't mention the TA exhaust as a clean valence option.