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Local muffler shop or online kit for 67 Belvedere w/ 318 and factory exhaust manifolds?

Next question now that I am looking closer at the TTI site.
This is my driver side manifold casting # 2465719: IMG_7133.jpeg
This matches up to what TTI needs perfectly.

Now for the passenger side I have a bit of a mysteryIMG_7137.jpegIMG_7138.jpegIMG_7139.jpegIMG_7140.jpeg
detail IMG_7139.jpeg

This is the only marking I can see on the passenger manifold. "BZC"?


Any thoughts on what I have here?
 
Next question now that I am looking closer at the TTI site.
This is my driver side manifold casting # 2465719:View attachment 1932955
This matches up to what TTI needs perfectly.

Now for the passenger side I have a bit of a mysteryView attachment 1932965View attachment 1932968View attachment 1932971View attachment 1932974
View attachment 1932975

This is the only marking I can see on the passenger manifold. "BZC"?


Any thoughts on what I have here?
Does it look like the head pipes are old? Possibly originals? Have they been added onto down by the transmission or the like. I am thinking that if the passenger's manifold was replaced, a new head pipe could have been made to fit the system. If the pipe from the manifold back is one piece, the manifold is probably the stock one. #2843953
 
I like that idea but I am not certain I can convince my wife that there has really been any savings since I do not own a welder and would need to buy one. :p
I did my own systems before I got a welding machine using slip fit stuff.....
 
The title basically says it all.
I am looking to change the exhaust to get a more muscle car sound for our 67 Belvedere. We have already added an Edelbrock performer manifold and 1406 carb along with Pertronix ignition system. I know I want duals from the manifolds back with either an x or h pipe. After that I still am very nostalgic for the sound of good old glass packs. Is there any reason I would want to go with a mail order exhaust system package over going to a good local ahop and having them do it all?
Just as a comparison, I just asked a friend who managed a Midas for years and owned an Exhaust Pro's for many more. Here's what he said.

"Dual exhaust: From headers to mufflers, 3” aluminized pipe With H pipe or X pipe, Turbo mufflers, 2 1/2 aluminized tail pipes And hangers, $900-$1,200.00 Depending on vehicle"
 
Make sure you go with 2 1/4 or 2 1/2 even if it's a 318. 2 1/4 all the way back is good or 2 1/2 with 2 1/4 tail pipes is good too. I don't like 2" on anything.
2" is plenty for a almost stock 318 and easier to route and cheaper to buy. They ran pretty good with a single exhaust.
Mike
 
Does it look like the head pipes are old? Possibly originals? Have they been added onto down by the transmission or the like. I am thinking that if the passenger's manifold was replaced, a new head pipe could have been made to fit the system. If the pipe from the manifold back is one piece, the manifold is probably the stock one. #2843953
I will look at this closer in the next few days.
 
Don's Custom Exhaust
  • Name: Don's Custom Exhaust & Brake
  • Address: 105 E 5th St, Delphos, OH 45833
  • Phone Number: +1 419-692-2073
  • Rating: 4.8 stars
  • Hours of Operation:
    • Monday - Friday: 8:00 AM - 5:00 PM
    • Saturday: Closed
    • Sunday: Closed

The location is displayed on the map above.


For more details on their services or to confirm current hours, I recommend calling them directly.
 
1760574049134.png




Waldrons is another option. I see they are 10-12 weeks out though.
 
I would suggest putting late 360 pickup truck exhaust manifolds on your 318, and have a competent exhaust shop fabricate a dual system for it. The truck manifolds are a lot more free flowing and will take a 2 1/4" headpipe. I have found that most shops take a lot of pride in having a collector car in their place, and do their best work on it. Living in Ontario, I found it was too expensive to have premade exhaust purchased and sent up here. I have had local exhaust shops build systems for a couple of my cars, and was happy with the results.
 
Waldron doesn't do small blocks with Magnum manifolds. I will have them do my exhaust but I will use other msnifolds. You need the manifold casting numbers to order.
 
2" is all that will fit up to the exhaust manifolds, but can be stepped up if needed. 2-1/4" is pretty easy to work with / get to fit and there are alot of muffler options.
The TTI exhaust system is good and has mandrel bends for good flow. The turbo mufflers flow good and are not super loud.
The down side is your labor to install them, unless you have someone else do the install. If doing the TTI, the 2-1/2" system with H-pipe would be my choice. The X-pipe isn't worth the extra money. I put the X-pipe 2-1/2" system on the Convertible and it is fine, but I don't think worth the extra cost. I have the 3" H-Pipe on the Charger and it works great. Have another TTI 2-1/2" H-Pipe for the small block Coronet 500.

With exhaust shops, you need to do some research to see who does good custom work, and what they charge, and when they can do the work.
Most muffler shops don't do mandrel bends, so and tight bends in the pipe will be slightly crushed. Usually the larger diameter the exhaust, the worse the bends are.
The fitment will be to the ability of the employee making the exhaust. Quality of components will be what the shop uses and can vary quite a bit, that is why you need to do the homework and maybe see other customers cars.
 
Does it look like the head pipes are old? Possibly originals? Have they been added onto down by the transmission or the like. I am thinking that if the passenger's manifold was replaced, a new head pipe could have been made to fit the system. If the pipe from the manifold back is one piece, the manifold is probably the stock one. #2843953
The more I look the more I am convince that you are correct on the manifold being a 2843953. I am leaning towards the TTI option for the exhaust. It seems like everyone has such good things to say about them and they appear to have it figured out well. I think that will give me something I can install myself and then have it all welded at some point in the future if I want/need to.
 
The more I look the more I am convince that you are correct on the manifold being a 2843953. I am leaning towards the TTI option for the exhaust. It seems like everyone has such good things to say about them and they appear to have it figured out well. I think that will give me something I can install myself and then have it all welded at some point in the future if I want/need to.
It will be the last exhaust you have to put on that car. Good choice. TTI has done it right with their specific head pipes to mate stock manifolds to the rest of the system.
 
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