New N10 on eBay???
#1
Supreme Member
Thread Starter
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
New N10 on eBay???
Something funny about the looks of this one. Doesn't seem factory. What do you guys think? Pricey, too!
http://www.ebay.com/itm/NOS-RARE-GM-...53.m1438.l2649
http://www.ebay.com/itm/NOS-RARE-GM-...53.m1438.l2649
#2
Supreme Member
iTrader: (1)
Join Date: May 2015
Location: Temecula, CA
Posts: 1,149
Received 83 Likes
on
67 Posts
Car: 1989 Pontiac Formula 350
Engine: L98
Transmission: 700R4
Axle/Gears: BorgWarner 3.27 Posi
Re: New N10 on eBay???
Looks exactly like the NOS (advertised as such) one I saw that sold (here) not too long ago.
Last edited by thtanner; 07-14-2017 at 02:24 AM.
#3
Supreme Member
Thread Starter
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: New N10 on eBay???
I don't know. Finish seems too nice and I don't see and factory tags. I could be wrong, though.
#4
Senior Member
iTrader: (5)
Join Date: Jan 2009
Location: Golden, CO
Posts: 887
Likes: 0
Received 11 Likes
on
9 Posts
Car: 87 IROC
Engine: L31 350
Transmission: T56
Axle/Gears: 4.10 D44
Re: New N10 on eBay???
Pricy for sure. I though an aftermarket company (MagnaFlow) built a dual cat SS exhaust that has since been discontinued. Mandrel bends means not factory. But could be SLP.
Trending Topics
#10
Supreme Member
Thread Starter
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: New N10 on eBay???
They guy that pays 1500 bucks for that will feel like a chump.
#11
Supreme Member
iTrader: (58)
Re: New N10 on eBay???
The seller is/was a member here. He probably just doesn't know what he's got, or uploaded the wrong photo. Even if it were an NOS GM dual cat setup, it wouldn't be worth $1500. That's just ridiculous. I'm not sure I'd trust the elements in the cats to still be good after sitting since 1992. I've had a few fail while sitting in storage.
#13
Supreme Member
Re: New N10 on eBay???
Would those Magnaflow Mandrel bent replacement ones offer any performance upgrade over a stock N10? I imagine it'd be minimal if any, but might be a cool addition for a total package of small upgrades adding up to something large.
#14
Supreme Member
Thread Starter
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: New N10 on eBay???
I think the difference is minimal. The Y-merge might be a couple horsepower, (although IIRC, SLP claimed 5 for their's back in the day). Mandrel bends another 1 or 2. Let's call it 5 tops over a stock system - if that.
Last edited by chazman; 07-14-2017 at 11:15 AM.
#15
Supreme Member
iTrader: (58)
Re: New N10 on eBay???
The stock setup has a lot of restrictive crush bends, and the merge. The MF pipes are a bit larger all around, and good cats will flow better than those that are potentially failing.
Back in the day, the hot setup for dual cat cars was the Flowmaster Y-pipe in the dual cat cat-backs. It was part of the GM Performance Parts ZZ conversion kit for thirdgens too. It's safe to say that if GM felt it was worth including, there's some gain to be had there.
Personally, I don't think we give the dual cat system nearly enough credit. The published ratings don't show that they're worth a ton of horsepower. But thirdgen enthusiasts waste a lot of time and money chasing smaller gains. It's just unfortunate that it's more difficult to keep the dual cats, then it is to convert to a single or dump the cats altogether. It'd be interesting to see dyno results with dual vs single cats. But really no one will probably ever bother to do a real world comparison.
Back in the day, the hot setup for dual cat cars was the Flowmaster Y-pipe in the dual cat cat-backs. It was part of the GM Performance Parts ZZ conversion kit for thirdgens too. It's safe to say that if GM felt it was worth including, there's some gain to be had there.
Personally, I don't think we give the dual cat system nearly enough credit. The published ratings don't show that they're worth a ton of horsepower. But thirdgen enthusiasts waste a lot of time and money chasing smaller gains. It's just unfortunate that it's more difficult to keep the dual cats, then it is to convert to a single or dump the cats altogether. It'd be interesting to see dyno results with dual vs single cats. But really no one will probably ever bother to do a real world comparison.
#16
Member
Join Date: Jul 1999
Location: Milwaukee, WI
Posts: 268
Likes: 0
Received 1 Like
on
1 Post
Car: 1985 Trans Am/WS6
Engine: 5.0 TPI
Transmission: Auto
Axle/Gears: 3.27
Re: New N10 on eBay???
https://thirdgenfbody.wordpress.com/...ft-april-1989/
Can't find the original article but it is repeated there. No dyno test w/the N10 but good info.
#17
Supreme Member
iTrader: (58)
Re: New N10 on eBay???
That article is really interesting... It's worth noting that SLP Tri-Y's were good for a 12hp increase, while a proper Y-pipe was good for 5hp. That's not bad considering a Y-pipe is less expensive and easier to adapt than a set of headers. Assuming we go with the quoted 10hp boost of the stock dual cat setup, an aftermarket dual cat setup realistically could be almost as much of a boost as the Tri-Y headers.
Magnaflow should really take that extra half step and include the hanger and heat shield for the dual cats and offer the complete system as an upgrade.
I suppose pairing dual cats with headers, and potentially full dual exhaust would be even better...
Magnaflow should really take that extra half step and include the hanger and heat shield for the dual cats and offer the complete system as an upgrade.
I suppose pairing dual cats with headers, and potentially full dual exhaust would be even better...
#18
Banned
Re: New N10 on eBay???
I remember an article from GMHTP where the best dyno results on a 3rd gen was a 4" mid pipe to a 4" inlet/outlet single exhaust muffler without a cat. GM even used a similar set up on the 1992 "Heritage" Camaro prototype they built.
I love this car. Too bad it was stolen and never recovered.
I love this car. Too bad it was stolen and never recovered.
Last edited by steves; 07-14-2017 at 02:22 PM.
#19
Supreme Member
Thread Starter
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: New N10 on eBay???
This one's pretty good -
https://thirdgenfbody.wordpress.com/...ft-april-1989/
Can't find the original article but it is repeated there. No dyno test w/the N10 but good info.
https://thirdgenfbody.wordpress.com/...ft-april-1989/
Can't find the original article but it is repeated there. No dyno test w/the N10 but good info.
It seems that GM did a pretty good job with the N10 system. Almost as much power gain as headers through a single cat, almost as much gain as no cat and flow rates which are 250 CFM for the single cat vs 275 CFM EACH for the N10.
Last edited by chazman; 07-14-2017 at 03:02 PM.
#20
Supreme Member
iTrader: (58)
Re: New N10 on eBay???
I remember an article from GMHTP where the best dyno results on a 3rd gen was a 4" mid pipe to a 4" inlet/outlet single exhaust muffler without a cat. GM even used a similar set up on the 1992 "Heritage" Camaro prototype they built
I love this car. Too bad it was stolen and never recovered.
I love this car. Too bad it was stolen and never recovered.
That car wasn't stolen. GM scrapped it. Pics are on here of it being cut in half.
#22
Member
iTrader: (2)
Re: New N10 on eBay???
The good news for anyone who ends up buying this...if they realize they were fleeced on this purchase before they install it, eBay's money back guarantee will protect them, since the seller of this is clearly misrepresenting it as an N10, which I am 100% certain that it is not.
#23
Banned
Re: New N10 on eBay???
I read somewhere that car was stolen and never recovered. I found the pictures of it being cut up. I'm a little sad seeing that. Till this day that car Is my favorite third gen.
#25
Banned
The following users liked this post:
1986BANDIT (07-22-2019)
#30
Supreme Member
Thread Starter
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: New N10 on eBay???
#31
Banned
Re: New N10 on eBay???
This might sound strange. Unless someone is doing a nut and bolt 100 point 3rd gen restoration on a car I think its a shame to use it. I look at that picture and I think it would make a nice piece of art to hang in the garage. Depending on how bad mines butchered I might clean up the one on my car when I replace it and mount it on the wall in my garage.
#32
Supreme Member
iTrader: (58)
Re: New N10 on eBay???
That looks like a stock setup, maybe it's just a bad photo, but it looks like someone polished it. Quite a few dents in the heat shields for NOS too. Both the stock dual cat setup I took out of my Formula at around 100k miles and the used dual cat setup that replaced it looked nearly as good. Makes me wonder if I could take a wire wheel and some WD40 to my old setup and pass it off as NOS. Maybe it's legit, but that price is still retarded.
At least three different manufacturers offer a stock style Y-pipe and dual cats, but the MF is higher quality than even NOS.
At least three different manufacturers offer a stock style Y-pipe and dual cats, but the MF is higher quality than even NOS.
#33
Supreme Member
iTrader: (58)
Re: New N10 on eBay???
I'm not sure it's a good thing. It might stimulate the lacking reproduction aftermarket, but it is just as likely that it'll drive the prices up to a point no one can afford, and folks won't be able to keep a nice thirdgen nice. Knowamean?
#34
Member
iTrader: (2)
Re: New N10 on eBay???
I totally hear you Drew. But I also think that third gens are completely undervalued, and I'm happy to see that the prices for our cars and the rare and desirable parts for our cars are finally starting to reflect that our cars are special and valuable. With that being said, another member on tgo recently sold a nos n10 setup for about half of the price that this guy is asking...I'm not sure anyone is rushing out or overly anxious or excited to drop $1500 on this setup in the current environment.
Asking and getting are two different things. Ebay is the home of the fool with money.
I'm not sure it's a good thing. It might stimulate the lacking reproduction aftermarket, but it is just as likely that it'll drive the prices up to a point no one can afford, and folks won't be able to keep a nice thirdgen nice. Knowamean?
I'm not sure it's a good thing. It might stimulate the lacking reproduction aftermarket, but it is just as likely that it'll drive the prices up to a point no one can afford, and folks won't be able to keep a nice thirdgen nice. Knowamean?