1985 corvette mufflers
06-12-2018, 02:10 PM
#1
1985 corvette mufflers
I am going to be getting a 3” true dual exhaust on my corvette and was wondering what mufflers should be the best. I really like the kbd targa mufflers but they might be too small of an inlet. Would 2 1/2 inlet hurt the performance of 3” true dual exhaust? If so I want it to sound like and old muscle car and have the quad round exhaust out the back. What mufflers would be good for this? Thanks for your help.
06-12-2018, 02:26 PM
#2
Zen Vet Master Level VII
Since everything sounds different to everyone, my suggestion is to check out YouTube and listen to several different combinations.
A consideration (or not?) would be drone. I'm way drone averse so my muffler choices are partially driven by mufflers that have no resonance.
A consideration (or not?) would be drone. I'm way drone averse so my muffler choices are partially driven by mufflers that have no resonance.
06-12-2018, 02:54 PM
#3
I like my corvette loud so the drone probably won’t bother me, I am getting an x pipe toward the front a little after the headers but as long as it doesn’t hurt performance I will get the kbd. If it would hurt it then I will get different mufflers because I want to get up to 300 hp from the engine after some other mods.
06-12-2018, 04:02 PM
#4
Drifting
when I did the headers, I got an "x" pipe and put two red "cherry bombs". coming out of each x and ran pipes (muffler eliminators] to the end....looks stock but isn't...
I've heard walker continentals have a sound too....
I've heard walker continentals have a sound too....
06-12-2018, 04:54 PM
#5
Le Mans Master
They're 2.5 but... Mid america eliminators. I think Allen's stainless makes 3 inch chambered eliminators...
06-12-2018, 10:31 PM
#6
I like my corvette loud so the drone probably won’t bother me, I am getting an x pipe toward the front a little after the headers but as long as it doesn’t hurt performance I will get the kbd. If it would hurt it then I will get different mufflers because I want to get up to 300 hp from the engine after some other mods.
Take my math with a grain of salt, I am well aware there is more at play than gas law/Bernoulli's equation, and that exhaust is not a laminar flow. Just the rationalization of my .02
06-13-2018, 12:25 AM
#7
Ok thanks for all of your help. I think I will be getting the kbd targas within the next couple months with 2.5” tips since it doesn’t hurt the performance. The muffler eliminators do sound good too but I just like the looks of the kbd a lot and they are somewhat of a muffler too which I wanted and people say they sound like old muscle cars. 84 4+3 that does sound good and those flags are pretty neat. Will you have them on there for the Fourth of July? 
06-13-2018, 12:46 AM
#8
Le Mans Master
Ok thanks for all of your help. I think I will be getting the kbd targas within the next couple months with 2.5” tips since it doesn’t hurt the performance. The muffler eliminators do sound good too but I just like the looks of the kbd a lot and they are somewhat of a muffler too which I wanted and people say they sound like old muscle cars. 84 4+3 that does sound good and those flags are pretty neat. Will you have them on there for the Fourth of July?
The eliminators are still mufflers. The tips are actually a tube. They're probably similar to the targas. The idle is very old school sounding but wot is a strange sound I just can't explain. It is a hybrid of old school muscle and LS sound I guess. It is very distinct to say the least. I have the zr-1 tips only because when I bought the car it had Zr-1 tips and I always felt that looked right.
06-13-2018, 10:39 AM
#9
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If you like a quiet cruise, Corsa. If you like a loud drone, with a good bit of resonance, Borla or B&B. Most of the others are just a little quieter than the latter. Flowmasters tend to resonate but of course I havent tried all their series. I run Power Effects that you cannot get new anymore.
Mine steps down from 3" at the headers to 2.5"
Mine steps down from 3" at the headers to 2.5"
06-13-2018, 01:37 PM
#10
Ok, I will decide between switching to 2.5” right before the mufflers and get the kbd 2.5” tips or I will get the 3 inch chambered eliminators like 84 4+3 is talking about. I like both of these because they give it that gurgling idle sound the old muscle cars have and I like the crackling sound it gives when shifting and decelerating. I’m leaning toward the kbd’s a little bit because I like the looks of them because my corvette is black with a little red and chrome and I think these would match it good. Thanks for letting me know some other options and if it could hurt performance. 
So how much do you think it would be for a shop to create the 3 inch exhaust all the way back and install the mufflers? I was thinking a little less than $300.
So how much do you think it would be for a shop to create the 3 inch exhaust all the way back and install the mufflers? I was thinking a little less than $300.
06-13-2018, 01:49 PM
#11
Ok, I will decide between switching to 2.5” right before the mufflers and get the kbd 2.5” tips or I will get the 3 inch chambered eliminators like 84 4+3 is talking about. I like both of these because they give it that gurgling idle sound the old muscle cars have and I like the crackling sound it gives when shifting and decelerating. I’m leaning toward the kbd’s a little bit because I like the looks of them because my corvette is black with a little red and chrome and I think these would match it good. Thanks for letting me know some other options and if it could hurt performance. So how much do you think it would be for a shop to create the 3 inch exhaust all the way back and install the mufflers? I was thinking a little less than $300.
So how much do you think it would be for a shop to create the 3 inch exhaust all the way back and install the mufflers? I was thinking a little less than $300.Edit: I should add the piping was 300 for the pipes, no labor included since I did it.
Last edited by TheBlaster9001; 06-13-2018 at 01:50 PM.
06-13-2018, 02:14 PM
#12
Ok, so I should look at something a little over $300 then since I can’t do this work and I need them to install the mufflers to them pipes too. Do you think it would be better to tell them to make an x pipe added to it right when the pipes come close to each other or for me to buy an x pipe ready for them to add to the pipes they create? I was thinking it would be better to just tell them to create it with the pipes. And yes I plan on having no cats on it so it flows the best. I don’t drive it that much anyway. I will call the local place and see if they will do it for something close to $300
Last edited by 85 CRVET; 06-13-2018 at 02:16 PM.
06-13-2018, 02:24 PM
#13
Ok, so I should look at something a little over $300 then since I can’t do this work and I need them to install the mufflers to them pipes too. Do you think it would be better to tell them to make an x pipe added to it right when the pipes come close to each other or for me to buy an x pipe ready for them to add to the pipes they create? I was thinking it would be better to just tell them to create it with the pipes. And yes I plan on having no cats on it so it flows the best. I don’t drive it that much anyway. I will call the local place and see if they will do it for something close to $300
06-13-2018, 02:38 PM
#14
Ok, well hopefully my local exhaust shop can do it and for around that price. I don’t live close to a big city where there is a lot of choices. I will be calling them soon and will be buying the mufflers within the next few weeks when I decide on the kbd’s or the chambered eliminators. I think I want an x-pipe so that it doesn’t drone too much even though I like it loud. I just wouldn’t like it so loud you can’t talk to the person next to you without yelling.
06-13-2018, 03:38 PM
#15
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My first exhaust was done by an old redneck with a garage in the woods for $225, I had the headers on the car and the mufflers in the back. My next was mandrel bent but was around $300 altogether.
06-13-2018, 08:03 PM
#16
Safety Car
I found a way to eliminate weight and make a great sound. I am using a "Chambered" exhaust system by Allen's Stainless Steel Exhaust out of Indiana. They sound great BEHIND the car. While driving I love the sound but it is not at all obtrusive. It is not much louder inside than it had been. You totally eliminate those big bulky mufflers and you still pass State Inspection.
I like these systems so much that I bought 2 complete systems. I have one on a 1968 C3 BB Convertible and the other for my 1988 C4 Corvette.
I installed the Chambered systems almost 20 years ago and they are still on the cars. The sound is very healthy, very powerful V8! On the C3 I have very high compression and when you listen to the engine it sounds like it is spitting out the exhaust while at idle.
I have been in a 1967 Corvette with a Small block 327-350 hp (?) with factory side pipes and that car was just plain unpleasant to be in. It was a convertible and the noise was so bad you could not speak to the driver or passenger. I have flown open cockpit air craft that were quieter than that beautiful Red with white leather and a white top Corvette.
The chambered systems from Allen's were my first experience with the chambered concept. I am completely satisfied with both of the systems I have bought so long ago. More importantly my neighbors are not upset as the noise can be controlled.
I like these systems so much that I bought 2 complete systems. I have one on a 1968 C3 BB Convertible and the other for my 1988 C4 Corvette.
I installed the Chambered systems almost 20 years ago and they are still on the cars. The sound is very healthy, very powerful V8! On the C3 I have very high compression and when you listen to the engine it sounds like it is spitting out the exhaust while at idle.
I have been in a 1967 Corvette with a Small block 327-350 hp (?) with factory side pipes and that car was just plain unpleasant to be in. It was a convertible and the noise was so bad you could not speak to the driver or passenger. I have flown open cockpit air craft that were quieter than that beautiful Red with white leather and a white top Corvette.
The chambered systems from Allen's were my first experience with the chambered concept. I am completely satisfied with both of the systems I have bought so long ago. More importantly my neighbors are not upset as the noise can be controlled.
06-14-2018, 12:36 AM
#18
Now that you guys are saying how good allen’s eliminators are I think I may be deciding on them. I don’t think I would want the whole chambered system because I was wanting the 3 inch true duals. I found the chambered muffler eliminators here https://www.corvettemods.com/C4-Corv..._p_15398.html#. What inlet would these be? I don’t see anything that tells that but I’m thinking about getting these with the 3.5” rolled tips. Would some of you guys who have the chambered eliminators mind posting a video of your car at idle? I heard one online and wanted to make sure I like the sound but I bet I would if it sounds like old muscle cars. I know you had a video of driving 84 4+3, do you have one at idle sound too? Thanks
06-14-2018, 08:23 AM
#19
Never mind 84 4+3, you already had one at idle and it sounded like the old muscle cars and like these videos I wanted mine to sound like.
https://www.dailymotion.com/video/x2qxubb or
and I think those chambered eliminators with true duals should sound about like this shouldn’t it?
https://www.dailymotion.com/video/x2qxubb or
Last edited by 85 CRVET; 06-14-2018 at 08:24 AM.
06-14-2018, 10:58 AM
#20
Le Mans Master
This is the best quality I can get. Now here i have a very mild cam so it's going to sound a little different than stock.