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.

http://i42.tinypic.com/11k8uau.jpg


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

Will it pass emisions?

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

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?

Good question :chevy:

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?

65 hp gain.

422 plus 65 = 487 crank hp

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

^ 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.

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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.

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 :iono:

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.

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