LS3 CAM AND HEADERS DYNO - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ADM PERFORMANCE · 01-05-2009, 03:15 PM

A really nice package for the ls3 camaro folks.

This is what a mild cam - 224/233 5xx 6xx 116 should gain from stock.This cam has proven to be the best overall for Hp/Torque and fantastic driveability in other Ls3 powered cars.

Note - This is not the biggest cam we offer nor the most power we have ever made with an LS3 CAM AND HEADER COMBO,It just happens to be the best overall cam and header combo in my opinion.

Andy

dieseldave24v · 01-05-2009, 03:35 PM

Will it pass emisions?

383ss · 01-05-2009, 03:37 PM

not bad. I would like to see a graph vs RPM instead of SPEED though.

SSNIGHTMARE · 01-05-2009, 03:39 PM

A stock ls3 dynoed 397 to the rear wheels, are they that under rated from the factory? Wouldnt that roughly put it at 397 x 1.17 = 464 at the flywheel?

Camaro68 · 01-05-2009, 03:41 PM

Quote:

Originally Posted by dieseldave24v

Will it pass emisions?

Good question

JMAN311 · 01-05-2009, 03:42 PM

Wow, 66 horses from a cam and headers...not bad at all. Judging from your website that's about $600 for the cam w/ install kit and then what type of headers were used? Longtubes? Also, how much would you anticipate the headers for the Camaro's LS3 to cost?

I'm assuming your dyno was from a stock C6 vette and then again with your cam/headers added to it's LS3? was there also an X pipe and cat-back system added or just the headers?

camaro5 · 01-05-2009, 04:23 PM

65 hp gain.

422 plus 65 = 487 crank hp

Here's the Corvette LS3 keeper upper power I have been talking about.

*GTAHVIT* · 01-05-2009, 04:27 PM

^ I think he's talking about the stock numbers being underrated based on the stock rwhp. 397 rwhp really means closer to 460 at the crank in stock trim.

*The_Blur* · 01-05-2009, 05:30 PM

Quote:

Originally Posted by dieseldave24v

Will it pass emisions?

Quote:

Originally Posted by 383ss

not bad. I would like to see a graph vs RPM instead of SPEED though.

ADM PERFORMANCE · 01-05-2009, 07:28 PM

Quote:

Originally Posted by dieseldave24v

Will it pass emisions?

This cam is not emmissions legal.

I would recommend the Magnacharger by Magnasun Products (once available) for increased hp and torque if your looking to build an emmissions friendly vehicle.

ADM PERFORMANCE · 01-05-2009, 07:32 PM

Quote:

Originally Posted by SSNIGHTMARE

A stock ls3 dynoed 397 to the rear wheels, are they that under rated from the factory? Wouldnt that roughly put it at 397 x 1.17 = 464 at the flywheel?

This was a Ls3 Corvette with C6 Z06 Exhaust and tune prior to cam and header install.

Most LS3 Vettes I do make over 420 rwhp and torque with headers ,Intake,Tune and stock cam.Some tuners claim HIGHER NUMBERS

kevin2323 · 01-05-2009, 07:42 PM

noob question do all states have emission laws?

dieseldave24v · 01-05-2009, 07:48 PM

Quote:

Originally Posted by kevin2323

noob question do all states have emission laws?

Yes. There is a federal emissions law, then states decide how they are going to check it. Some "ie California" are very strict. Others just kind of go through the motions. I dont think there will ever be a set of CARB legal LT headers.

I don't agree with the rules, but they state the the factory catalytic converter(s) must remain intact and in the factory position(s). The converter are so far forward on most cars that there isn't room for long tube without breaking that rule.
The reason the rule exists is so that cold-start catalyst light-off is not delayed by the additional exhaust tubing length between the heads and converters. Also, the oxygen sensor has to be in the flow post-collector. Long tube headers require that the sensor be moved further downstream since the collector is further downstream. The further from the head ports the oxygen sensor get the more "lazy" they get since they're measuring the output from operating conditions "too old". Basically you end up with bad data and that affects emissions too.
So, YES - long tube headers absolutely fail visual inspection by definition.
Long tube headers themselves have minimal effect on actual emissions, the problem is the latency induced by the greater exhaust gas travel to the O2 sensors. Generally, they WILL pass the sniffer because there is very little affect at constant sustained throttle conditions where these test take place at on t he dyno.
Of course, legal headers must acommodate all factory emissions eguipment like EGR, A.I.R., O2 sensors, etc.

kevin2323 · 01-05-2009, 07:49 PM

kk down here in miami....never heard of it...thanks for the info/

01-05-2009, 03:15 PM	#1
ADM PERFORMANCE Drives: Anything I want Join Date: Oct 2008 Location: DfW - Texas Posts: 5,405	LS3 CAM AND HEADERS DYNO A really nice package for the ls3 camaro folks. This is what a mild cam - 224/233 5xx 6xx 116 should gain from stock.This cam has proven to be the best overall for Hp/Torque and fantastic driveability in other Ls3 powered cars. Note - This is not the biggest cam we offer nor the most power we have ever made with an LS3 CAM AND HEADER COMBO,It just happens to be the best overall cam and header combo in my opinion. Andy

01-05-2009, 03:35 PM	#2
dieseldave24v PowerStroke this Ford boy Drives: Like Don Garlits "Big Daddy" Join Date: Sep 2008 Location: Richlands/Camp Lejeune NC Posts: 462	Will it pass emisions? __________________ Hey big man let me hold a dollar

01-05-2009, 03:39 PM	#4
SSNIGHTMARE Drives: 2002 SS Camaro Join Date: Mar 2008 Location: PA Posts: 372	A stock ls3 dynoed 397 to the rear wheels, are they that under rated from the factory? Wouldnt that roughly put it at 397 x 1.17 = 464 at the flywheel? __________________ 04 GMC LB7, SOCAL DIESEL STAGE 2 HEADS, CROWER RODS, TWIN CP3 483 RWHP, 1008 FT/LBS, ATS 5K 02 SS, LSX BLOCK, 500 HP, WAITING ON BOOST 98 COBRA, EAGLE CRANK AND RODS, 568 RWHP, S-TRIM 02 SS, STOCK, THE SLO HO 08 CTS, POS EFI Live "Nitrous is like a hot girl with STD's, you know you wanna hit it but you're afraid of the consequences!" "..it does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in people's minds.." --Samuel Adams

01-05-2009, 03:42 PM	#6
JMAN311 Drives: 2013 F-150 Limited Join Date: May 2008 Location: Parker, CO Posts: 2,191	Wow, 66 horses from a cam and headers...not bad at all. Judging from your website that's about $600 for the cam w/ install kit and then what type of headers were used? Longtubes? Also, how much would you anticipate the headers for the Camaro's LS3 to cost? I'm assuming your dyno was from a stock C6 vette and then again with your cam/headers added to it's LS3? was there also an X pipe and cat-back system added or just the headers? __________________ There just might be a 2016 Camaro or Corvette in my future... _____________________________________________ Previous Chevy's 2013 Camaro ZL1 A6\|SIM 2010 Camaro 2SS/RS\|M6\|CGM Exterior\|Gray Int 2000 Camaro SS\|M6\|SLP headers\|SLP center mounted quad exhaust\|Magnaflow muffler\|Hypertech programmed 2001 Corvette\|M6\|LG Motorsports Headers\|Corsa Touring Cat-back\|Magnaflow X Pipe\|Hurst short-throw\|Dyno tuned

01-05-2009, 04:23 PM	#7
camaro5 Drives: X-15 Velocipede Join Date: Mar 2008 Location: SW Florida Posts: 4,637	65 hp gain. 422 plus 65 = 487 crank hp Here's the Corvette LS3 keeper upper power I have been talking about. __________________ Go from the presence of a foolish man, when thou perceivest not in him the lips of knowledge General Motors ASEP, A.S. Automotive Technology, Telecommunications Specialist, CISCO Network Engineer STANDARD DISCLAIMER camaro5 is furnishing this information "as is". camaro5 does not provide any warranty of the information whatsoever, whether express, implied, or statutory, including, but not limited to, any warranty of merchantability or fitness for a particular purpose or any warranty that the contents of the information will be error-free.

01-05-2009, 03:37 PM	#3
383ss Drives: 1985 IROC, 2011 Camaro Join Date: Oct 2008 Location: Lemont, IL Posts: 284	not bad. I would like to see a graph vs RPM instead of SPEED though.

01-05-2009, 04:27 PM	#8
GTAHVIT Blessed Drives: 2013 Sonic RS MT Join Date: Dec 2007 Location: Saint Augustine FL Posts: 28,444 View My Garage	^ I think he's talking about the stock numbers being underrated based on the stock rwhp. 397 rwhp really means closer to 460 at the crank in stock trim. __________________ Click image to see build thread. PQ - "the love of cars. It's a boys first step toward manhood and a mans last hold on boyhood." Fbodfather - "We do not want to use the Z28 moniker on a car that does not deserve this hallowed name." The_Blur - "Let's not confuse competitors with equals."

01-05-2009, 07:42 PM	#12
kevin2323 Drives: challenger Join Date: Jul 2008 Location: miami Posts: 2,338	noob question do all states have emission laws?

01-05-2009, 07:49 PM	#14
kevin2323 Drives: challenger Join Date: Jul 2008 Location: miami Posts: 2,338	kk down here in miami....never heard of it...thanks for the info/

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