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You may want to reconsider: https://www.revisor.mn.gov/statutes/?id=169.69 . Not sure how inspections are done up there since emission testing ended in the Twin Cities. They aren't legal in Texas, where there are annual vehicle inspections, either. Unless someone gets under the car, however...

X2 as far as mufflers go. Turn down ahead of axle would enhance the sound and feel of what you have now. Carbon monoxide warning with this one. As far as factory exhausts go, I was a big fan of a 65 Formula S Barracuda (non CA) in my neighborhood and the chambered exhausts available on the...

I'd like to install a Magnaflow muffler on a system that is aluminized steel. The Magnaflow is only available in SS. Can this be welded together or will it be necessary to use clamps? Since both items are steel, will there be cathoding (dissimilar metals tend to rust when they are put together?

I'm not sure if Autozone will do this, but Home Depot does. It is possible to order the item at the store and have it shipped to the store with its regular stock order saving the cost of shipping. A store that's moving a lot of items could have your headers at the store in 3-5 business days...

I agree, but the 340 and 318 exhaust manifold sets are not equal. The 340 exhaust manifolds are larger than the ones used on the 318. IIRC, the drivers' side manifold exits at a different angle on the end. For certain, the stock 318 passenger side manifold exits straight down at the center...

Classic Industries has A-body 318 2¼" pipes that would make duals on a > 67 A-body. There is a particular casting or part number manifold that will work listed for each pipe. I was lucky, they matched the manifolds on my Demon.

Dynomax Ultra Flo are unchambered, perforated tube mufflers. They work like a gun silencer. Of course, if you want to do it on the cheap, a pair of glass-packs (Cherry Bombs, Thrush)...

The Magnum heads are distinguished from the older LA heads by their pedestal mounted rocker arms (like the Chevrolet engines). The older LA use a rocker arm shaft. The 273 and 318 (except the factory 318 4bbl) use what can be considered small port heads. The valves as well as the passage ways...

It seems to me that aftermarket systems use clamps because the average garage does not have inert gas welding equipment rather than concern over welding. If the car in you avatar is the one that is to receive the new exhaust system, you may want to check routing of a dual system. The TB...

This clip is a great find. Thanks for sharing. Very good to see interior db readings, too. I didn't notice a crossover pipe on the test car, which explains the rap I thought I heard.

Both glasspacks and Dynomax Ultraflows are single pass designs, which IMO have the least amount of backpressure. Both work like gun silencers, although the Ultraflow has a gentle S-bend in it. One of the problems we all face with non-OEM exhaust solutions is there is very little uniformity of...

My understanding is that it is only required when using a full size filter (Wix 51515). If the "shorty" is used (Wix 51085), the need is not as great. The problem IIRC was not interference with the exhaust, it was interference with the torsion bars. Normal engine movement would cause the end...

Nice sounds. Wouldn't believe it was a 318. Wish someone would post a 273 Commando with the straight through primary muffler and box end resonator. That son-of-a-gun sounded stout. The straight through was only used on the 65 Commando and Charger 273 motors. 66 & 67 used a low restriction...

The only V-8 A-body headers I haven't heard fitment gripes against are Doug's and Tti. Neither is particularly cheap, but maybe less than the block huggers and a pro shop to make 'em work. lol If you have to go back to manifolds, the best ones out there are the 340s. (Photo below) From what...

Supposedly the Magnum manifolds will fit a car w/o PS. http://www.forabodiesonly.com/mopar/...d.php?t=118789

I wouldn't know about ideal size or manifold size. My 73 came with a 1 7/8" exhaust pipe. The Feather Duster had a 2¼" exhaust system from head-to-tail. As far as I know the same exhaust manifold was used. When I replaced the exhaust on the 73, I went to a 2¼" pipe. There was a slight...

LOL. I hate to break it to you but you may be getting old. Back in the day, one of my friends with a hot ride had a 396 Chevelle, straight pipes & resonators. I thought that thing sounded cool at the time. People in the cemetery would sit up when he drove past with his foot in it. Today, it...

Similar in the sense that the inlet and outlet are on the same end. I think that the C6 uses a 2½" pipe. The C6 outlet is a single but the pipe splits to offer the two outlets per bank you see hanging out the back on a stock C6.

One of the issues you may have to deal with is getting the passenger side exhaust pipe to work out. Everyone I have know who has tried to keep the pipes the same length ran the passenger side exhaust pipe under the torsion bar cross member. Subsequently, they either hung the pipe on something...

I found this one on eBay. It is now under my Demon. Found one in a salvage yard that I cleaned up and sold. I haven't seen them in Repro, but I quit looking some time ago.

Muchas gracias, amigo. The LH was the one I was sweating about more. 2Darts

Here's one I found.

After having the hope of using Magnum exhaust manifolds on the Demon dashed due to insistence on having power steering, I'm looking to open things up with conventional manifolds. I found a pair that are supposedly off of a 360. I'd like to know what I found in my own junk before I go off in...

I went to a low restriction turbo muffler and a 2¼" pipe on my 73 /6. I also went to an oversized exhaust manifold w/o a heat riser. The bigger pipes definitely deepen the sound. Although at highway speeds, the exhaust noise is no worse inside the car than a stock system. If I had to run a...

From reading other posts, the concensus seems to be that Hedmans are a PITA, but TTI and Doug's fit easily enough. It sounds like Spitfires work well most of the time, but that working with the company can be a bit problematic. You can. To get better sound, recommend a cross-over or an...

Auto Zone P/n for 318. http://www.autozone.com/autozone/parts/1973-Dodge-Dart/EGR-Valve/_/N-ip5ybZ93xpy?filterByKeyWord=EGR+valve&fromString=search

I've looked at this thread and the one below. http://www.forabodiesonly.com/mopar/forumdisplay.php?f=55 It is true that what sounds best is a matter of preference. IMO, what makes or breaks a system is the presence of a crossover pipe. The sound clips I have like have all had either an X or...

Year One has 2½" tail pipes for w/ & w/o resonator tips. They also have 2¼". That makes for a bunch of different pipes. Watch for size, side, and end to be sure you get what you want. I got some of the same stuff when I asked around about a system for my Demon. IMO, if the car is lifted by...

If you're looking for improvement and keeping the cost down, try going 2½ to the muffler and leave the rest at 2". This is similar to what Mopar did with the single exhaust Commando/Charger 273s. I'm told that dropping the interior pipe diameter at the tail pipe helps maintain exhaust...

Install a cross-over or X-pipe.