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6/24/13 1:47pm - Original Message: 'New exhaust question *UPDATE* in last post'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038
As always I come to the experts.  I am looking to put a new exhaust in my '81.  This car is not original and will be a keeper for me and my daughter.  As you may remember, my daughter is the only 1 of my 3 kids (other 2 are boys) that have shown an interest in restoring the vette and has threatened her loving father with certain death if he ever thinks of selling.
 
Current engine is a lightly modified, naturally asperated 330hp, 350tq small block.  I had the original manifolds replaced with headers and the "fine mechanic" who installed the headers got the wrong ones.  So he cut the original exhaust in order to weld a custom pc in but never finished the job.  The headers are junk, so i'm replacing them. 
 
Now, I'm looking for a headers to tail pipe exhaust.  I'd like to get a true dual exhaust with cats because of potential inspection problems and I would love it to be bolt on as I don't weld and I really don't want anymore "fine mechanics" working on the vette if possible. 
 
I saw corvette central has a couple of options but the ones that seem reasonable are sans cats.  I suppose I could cut the pipes and add them but it would be nice to have a kit that already has them engineered in.
 
Thanks,
Dave


|UPDATED|6/24/2013 11:47:01 AM (AZT)|/UPDATED|


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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12/1/12 12:11pm - Reply: 'Re: New exhaust question'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
To bad you weren't looking last year for a header/true duals with cats. I sold mine last year on Craigslist. Plus your close by me.

I had Flowtech ceramic long tube headers and 2.5" stainless true duals w/cats and IMCO stainless mufflers. Mufflerman in Kenmore did the exhaust for me. All custom bent. The IMCO mufflers had that Flowmaster muffler sound. It wasn't cheap. I think it was around $1k. 

I tried the dual exhaust system from Mid America. It didn't fit. I had another muffler shop try to fix it, but it wound up in the scrap pile.

If you look on my link below there should be some pics of my exhaust before I did my sidepipes.

***There is one pic of the header/full duals left. I must have deleted the rest***


|UPDATED|12/1/2012 10:11:53 AM (AZT)|/UPDATED|


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


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12/1/12 4:54pm - Reply: 'Re: New exhaust question'
Gunslinger
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
Take a look at Sanderson Headers http://www,sandersonheaders,com...they make some of the finest headers you can buy.  They have very thick flanges...far more so than most.  You have your choices of several finishes as well...ceramic, chrome, cast iron.  

Rather than buy an exhaust system from a catalog supplier (no criticism of their products), I think you do better to have an exhaust shop make you the system and fit it up, plus you can specify your choice of mufflers.  The difference in cost between a pre-made exhaust system and one custom made is probably minimal.

For mufflers, I'm partial to Magnaflow, but that's due to their sound.  Flowmaster is excellent as well but I don't prefer their loud, raspy sound.


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Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

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12/1/12 8:10pm - Reply: 'Re: New exhaust question'
Case75
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, - Canada

Vette(s):
1975 Corvette 383 stroker w/Patriot 190 heads, Eagle stroker kit, Comp 279TH7 cam, DUI distributor, Edelbrock 7116 intake, Edelbrock 1806 carb, Hedman Hedders, TH400 w/TCI Breakaway 2400 stall, Transgo 1-2 shift kit.

Joined: 6/19/2012
Posts: 230
I have a set of Hedman long tube 1 5/8" into 3" collectors with their HTC coating. Very happy with them. I'm running 2.5" full dual mandrel bent pipes with a crossover into Magnaflow polished stainless mufflers. I get alot of compliments on the sound of the Magnaflows; very smooth and deep sound. I see Magnaflow makes a universal 2.5" cat that I'm planning on adding a pair of this year as the enviros are cracking down around here lately.

____________________________________
 
Build Date: May 7, 1975. 383 w/267 RWHP/310 RWTQ
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12/2/12 10:45am - Reply: 'Re: New exhaust question'
tonytheroofer
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Rochester, NY - USA

Vette(s):
1980 L- 82 fully restored and upgraded.

Joined: 6/12/2012
Posts: 95
For NY the inspection stations are supposed to look to see if the emission devices are present , there is no way to test for emission function other then visually. It has been my experience with my 1980 that I have gotten a safety only  inspection which what is done with older cars just like back in the day. 

So if your car is like mine with no AIR pump you would naturally fail as that visual can be done as well as looking for catalytic converters and because of this I simply will not run the converters and it has not caused an issue at all. 

So if you want to go custom I would forego the expense of  catalytic converters


|UPDATED|12/2/2012 8:45:33 AM (AZT)|/UPDATED|


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1980 , ZZ430 , 3.92 rear , 700R4 2400 stall NEW EZ EFI 
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12/4/12 7:00pm - Reply: 'Re: New exhaust question'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038
Thanks guys, great advise. 
 
Sarge, good thing you mentioned Mufflerman.  I couldn't remember their name and I knew I had heard of good things about them from others in the area cruise nights.  I'll have to give them a call.


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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4/11/13 11:07am - Reply: 'Re: New exhaust question'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038

The shop that I would take my Vette to do the work(mufflerman) will only do the exhaust with cats.  I don't want to spend $250 on a set of cats that I don't need.  So...looks like I'll be looking for a bolt on kit since I don't weld.  Still looking at the Corvette central dual exhaust with headers and magnaflo mufflers.  If you have any thougts let me know.

 
Thanks,
Dave


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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4/11/13 11:40am - Reply: 'Re: New exhaust question'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19454
Guv-ment/EPA regulations have made it next to impossible for muffler shops to do much anymore. ANY modification to the exhaust that would effect tailpipe emissions,even if it improves them, is frowned upon. Shops could, at the very least loose their operating license, and possibly face time in the cross-bar hotel.....

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Joel Adams
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4/11/13 9:35pm - Reply: 'Re: New exhaust question'
Gunslinger
Former Member
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
I installed the full dual exhaust kit from.Corvette Central for the '78 I used to own. It went on without any issues and performance increased...at least by my seat of the pants dyno.

____________________________________
Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

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4/12/13 9:56am - Reply: 'Re: New exhaust question'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
David,
 Mufflerman got busted a few years back for not putting catalytic converters on older "hotrods" that originally came from the factory with them. The fine was pretty stiff from what I heard. If you don't mind me asking, what was the price quote they gave you? It had to be over $1k.

Sarge


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


Lifetime Member #26
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4/12/13 7:14pm - Reply: 'Re: New exhaust question'
JimmyS5600
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Clarence, NY - USA

Vette(s):
1979 L82 1991 Roadster 1996 Collector Edition

Joined: 11/10/2001
Posts: 10
 Ian local to you also I just but new exhaust on my 79 L82. Found a "test pipe" on ebay to eliminate the converter. Bought a new rear Y from Wilcox and Magnaflow mufflers
from Corvette Central. It is fairly quiet at idle but has a good roar under heavy throttle.
It feels stronger with this new set up.   
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4/14/13 4:00pm - Reply: 'Re: New exhaust question'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038
Ok, I've made a decision.  I'm going with the Corvette Central duals with Magnaflo mufflers...probably.
 
Sarge, they quoted me $1k, that did not include headers as I have a set on there that won't fit anything but a custom bent exhaust(and they're butt ugly).  That was a ball park over the phone estimate.  It was diffacult to get any type of figure until we started talking a little and he realized: 1.I wasn't going to hold him to the quote 2. wasn't a schmutz who knows nothing about cars and what could go wrong after the job gets started.  Here's where it got pretty cool talking with him.  He said they'd mock up the complete exhaust, have me come back and try out different sets of mufflers to see which I like the sound of more.  That alone should be worth a couple hundred bucks. 
 
I've also spoken to the mechanic who works on my parents car and does the jobs on my truck that give me the willies.  When asked about a hypothetical situation, a 1981 Corvette without cats he just gave me a blank stare and said "there's no computer to plug in".  Then I mentioned the lack of anti-smog equipment for the visual inspection he just gave me a blank stare and said "there's no computer to plug in".
 
When all is said and done I'll go with the CC system.  It'll end up costing me a few hundred less so I can spend more money on other parts. 


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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4/15/13 3:49pm - Reply: 'Re: New exhaust question'
JimmyS5600
Former Member
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Clarence, NY - USA

Vette(s):
1979 L82 1991 Roadster 1996 Collector Edition

Joined: 11/10/2001
Posts: 10
 I think your making the right choice
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5/21/13 4:04pm - Reply: 'Re: New exhaust question'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038
Just an update.  I did order the dual exhaust with headers from Corvette central.  Took 3 weeks to get here as they were waiting for the a/c bracket which is back ordered.  I asked them to just send it without the bracket.  The woman I spoke to warned me, very nicely, thatI would be charged for the while kit even tho I wasn't getting the bracket.  That was just fine with me since they had already charged me 3 weeks agoLOL
 
My mechanics aide, 16 yr old daughter, and I took the old old exhaust off without issue.  Loosely fit the headers and "h" pipe.  Then decided it was to warm  to work, especially with my back.  Sure it'll take us lot's longer but it's always been about working on it with my daughter. 
 
After this we get to install the new ignition switch, horn button and switch, check for the vacuum leak because the idiot who put the engine in didn't hook up the vacumm line correctly, put in the new door weatherstrip, any tips there would be appreciated, hook up the electronic vacuum advance on the carb etc etc
 
dave


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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6/24/13 1:56pm - Reply: 'Re: New exhaust question *UPDATE* in last post'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038
Finally got the exhaust installed.  A, normally, 3 or 4 hr job only took me 3 weeks or so due to my bad back.  With LOTS of help from my 16 yr old daughter the install was very smooth.
 
For those looking to get this exhaust I would advise you to get it.  Very easy install.  I had to drill a couple holes in the frame for the new hanger placement but that was a breeze. 
 
I can't give you any info on what it sounds like because I have to put in the new plugs and plug wires and the back can't handle it right now.  Oh and I still need to get the igniton switch installed.
 
Ever so slowly getting closer to the road...


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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 Forums -> C3 Fuel, Emission Control, and Exhaust Systems
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