Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

emissions legal

Thread Tools
 
Search this Thread
 
Old Feb 15, 2009 | 04:30 PM
  #1  
TROYWS6X's Avatar
Thread Starter
Teching In
 
Joined: Feb 2009
Posts: 11
Likes: 0
Question emissions legal

which head/cam combo do I need to make around 450 hp and still stay emissions legal in NY? Is it even possible?
Reply
Old Feb 15, 2009 | 08:10 PM
  #2  
ds98formula's Avatar
TECH Resident
15 Year Member
Photogenic
iTrader: (3)
 
Joined: Mar 2008
Posts: 965
Likes: 0
From: Joliet Illinois
Default

Do they sniff test or obd test?
Reply
Old Feb 15, 2009 | 08:24 PM
  #3  
rice4eatingnotdrivin's Avatar
On The Tree
 
Joined: Jun 2007
Posts: 184
Likes: 0
Default

As part of this inspection, all vehicles will undergo a gas cap check, a visual inspection of the emission control devices, and a test of the chemical components of the vehicle's exhaust. This last test is more comprehensive in the New York metropolitan area, where it is referred to as the "high enhanced" emissions inspection. Outlying counties conduct the "low enhanced" emissions inspection. No matter where you live, the following emission-control devices will be examined if they were originally built into the car:

* Positive crankcase ventilation system

* Catalytic converter

* Fuel inlet restrictor

* Exhaust gas recirculation valve

* Thermostatic air cleaner

* Air injection system

* Evaporative emission control
Reply
Old Feb 15, 2009 | 08:28 PM
  #4  
djsanchez2's Avatar
TECH Addict
iTrader: (14)
 
Joined: May 2005
Posts: 2,727
Likes: 0
From: Simi Valley, CA.
Default

Get a set of
Emmisions shorty headers (JBA, edelbrock)
2.5" SLP replacement Y-pipe
free flowing catback
Lid (w/ airtube if needed)
224R cam
P&P the stock heads
LS6 intake (mod for EGR tube if needed)
P&P TB
Killer tune

~420whp (+/- 10hp)

That should do it and keep you emmisions legal. It is a proven combo here in Cali. it will not net 450 wheel HP, but you can always toss on a little 75hp shot of nitrous and be good to go. If you are stuck on that number Forced Induction is the only way to go and stay legal. Prochargers will easily get you there and remain legal, It's just gonna cost a lot more.

Last edited by djsanchez2; Feb 15, 2009 at 09:46 PM.
Reply
Old Feb 16, 2009 | 02:31 PM
  #5  
TROYWS6X's Avatar
Thread Starter
Teching In
 
Joined: Feb 2009
Posts: 11
Likes: 0
Default

thanks. I already have everything but the heads, cam and tune. 450 hp is just a number I picked. I'd be happy with 420. Would long tube headers add anymore HP over the shorty?
Reply
Old Feb 16, 2009 | 04:08 PM
  #6  
toothdoc's Avatar
Launching!
iTrader: (7)
 
Joined: Aug 2005
Posts: 278
Likes: 0
From: Chicagoland
Default

Yes, LT's will net you a lot more hp. IMHO, shorties are not worth it. If you do a search you will see why.
Reply
Old Feb 16, 2009 | 05:21 PM
  #7  
RE AND CHERYL's Avatar
TECH Fanatic
iTrader: (31)
 
Joined: Apr 2007
Posts: 1,207
Likes: 0
From: Dover DE
Default

Originally Posted by TROYWS6X
thanks. I already have everything but the heads, cam and tune. 450 hp is just a number I picked. I'd be happy with 420. Would long tube headers add anymore HP over the shorty?
I switched from MAC mids to QTP LTs and noticed nothing below 4k, above that it pulled a little harder, but barely noticable.

Re'
Reply
Old Feb 17, 2009 | 03:40 AM
  #8  
00MaroonZ28's Avatar
11 Second Club
iTrader: (3)
 
Joined: Sep 2007
Posts: 792
Likes: 0
From: Brooklyn Center, MN
Default

It'll be tough, but around 400 is probably where you'll start to max out. TR 224 cam, ported LS6 heads milled, longtubes with performance cat's, and a F.A.S.T with the EGR hole cut out to run the tube in can net you around the 400 mark and be emissions compliant.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Feb 18, 2009 | 01:41 PM
  #9  
TROYWS6X's Avatar
Thread Starter
Teching In
 
Joined: Feb 2009
Posts: 11
Likes: 0
Default

thanks for the replies. anyone else have some more info on head and cam specs?
Reply




All times are GMT -5. The time now is 02:12 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE