emissions with cam
#1
TECH Apprentice
Thread Starter
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i going to put cam in my ls1. what is a cam safe for emissions. is 230 definate no pass or is 224 better. just wondering dont whant to get the car all together and the it fails. what is a decent power cam that will pass emissons test.
#5
TECH Apprentice
Thread Starter
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im in ontario too. they do a sniffer test in exhaust and run it on a dyno. i have put kooks longtubes on it with cats ls6 intake and slp lid below. havent tested it with this tuff yet put on just after last etest 2 year ago. i dont know if the hi flow cats would make it pass even now. i geeting ls6 stage 2.5 heads and a cam havent decided on the cam yet. i want an ms4 or ms3 but it prob wont pass with thouse big cams. i was thinking of getting a 224 like sugested. i also want to get a fast inatke too.
#6
TECH Senior Member
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To pass most sniffer tests, the cam must have sufficient underlap (i.e. at least 4° of negative overlap) and front NBO2's must be functioning (allowing PCM to trim).