Exhaust/Muffler Help
 

So I've been researching exhaust for my 1968, 327/350. Looking for advice on the mount for the mufflers. I want to use Dynomax Super Turbo mufflers but they and others usual suspects don't have the provision to connect to the factory muffler hanger at the exit point. What have others done to solve this? Or does anyone know if a company can provide a muffler with the welded attachment point? I see Corvette suppliers sell complete exhaust and I could buy just the mufflers. This would solve the hanger issue, but are these mufflers the same quality and how about the sound. I am trying to get a quitter, muscle car sound and no drone if possible. The car is for me and my wife to enjoy and not a racecar. don't want loud and raspy, just mellow throatiness. Please help.
Thanks

Try Magnaflow mufflers. I think they make direct-fit replacements for the C3 cars. Nice mufflers and you can make them as 'mellow' or as 'raunchy' as you choose.

Please show pictures when you get a chance.
Thank you

I'm with 7T1 on this. I looked at a ton of mufflers, even tried chambered pipes, and landed on Magnaflow Turbos for my 79. They bolted right up, absolutely perfect. No tweaking, bending, adjusting, nada. Sound is very deep, reminds me of a 50 series FM, and nice at full throttle. Deep and tough enough to not be whimpy at all around town (engine is stock, no smog stuff, no cat - off road pipe), and they roar at full-throttle. Very happy with them, and a very good price point as well. I have gotten numerous compliments on the tone at shows/cruises, and I am sure your 68 mill will sound even better! I love that engine, had a 327 in a 68 Camaro.

Just received a call from the machine shop (RAD his shop is in Ludlow, MA) where I had the machine work done. I dropped the motor off yesterday after completing the rebuild, he just finished the dyno test and reported the little 327 had no leaks, 432 ft. lbs. torque and 383 HP. I will pick it up next week along with the dyno printout. I can give more detail information after that. But I am very happy my first engine build went so routine. I did convert to a full roller comp cam, pocket ported the heads and used roller rockers. Stay tuned.

Here you go, sorry not at the Vette right now so I had to go with what I had pic wise.


https://cimg4.ibsrv.net/gimg/www.cor...447a78dc9b.jpg

https://cimg6.ibsrv.net/gimg/www.cor...4d6fae34a7.jpg

So the hanger has a bracket that screws into the frame, the original hanger position, that supports a rubber mount and then come down to a "hook", blocked by the tail pipe int the pic. That "hook" engages the c clamp that is bolted to the tail pipe.

All very neat and well supported. Not the original setup but very difficult to tell unless you really know what to look for and get down onto the ground to see. I think it works fine. Ike

You can just weld the mount/hangar straight to the muffler or the pipe.

http://img.photobucket.com/albums/v2...psteym0csw.jpg

It ain't the prettiest way to do it but, it works.

Actually it's not too bad. Thank you for the picture.

It looked a lot better when the mufflers were new and the paint was fresh on them. You barely noticed the rods welded on them. This pic above is like 9 years later....muffers need a touch up paint job.

If I was to do it again, I'd route the rod along the top of the pipe/muffler so you wouldn't see it from the back... Basically make an L out of the hanger and weld the lower part of the L to the top of the muffler.

Even though your mufflers (and pipes) may be "new", I'd suggest that you wipe all outer surfaces down with lacquer thinner (or other solvent that leaves no residue), then shoot a couple of coats of VHT "Flat Aluminum" paint. With heat, the paint will cure even harder and keep those pipes & muffler looking great for many years. If you are going to weld stuff together, leave paint off of those areas and paint over them after assembly.

Just the flat aluminum paint directly on the mufflers, no primer?

Good advice. My plan is to use Hooker Compition Headers with the matching exhaust pipe setup. I will mock everything up and take apart than have headers and pipes ceramic coated inside and out. The mufflers and clamps wil also be coated for a uniformed appearance. I am doing it this way in a effort to lower engine bay temps as well as under car heat from radiating into the cabin. I will also take measures when I am at the body reassembly stage.

Did you put true duals on or just replace the mufflers.

Did you buy these Magnaflow mufflers?

https://www.zip-corvette.com/78-82-2...-mufflers.html

Muffler choice
 

I settled on CC N-11 mufflers. It always a gamble because everyone has their own experience and opinion. I was looking for a not loud but rumble sound. After reviewing sevseveral comments I thought the N-11's fit my requirements best. All I can do now it wait and see if I made the right choice. I will report my experience.

True dual. I am hoping to have a drone issue. I am using CC N-111 mufflers.

Really?

https://cimg1.ibsrv.net/gimg/www.cor...917ecfe4f6.jpg


This is how I mounted my Dynomax Super Turbos.