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XFI 280 cam in a 383 LT1 Pass smog?

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Old 06-21-2010, 04:16 PM
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Default XFI 280 cam in a 383 LT1 Pass smog?
Just as the title says. Have any of you guys passed a smog test with this cam?
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Old 06-21-2010, 04:32 PM
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It's possible. Difficult, but possible.
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Old 06-21-2010, 06:59 PM
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Our Third Gens are doing it and at 355 cubic inches. This is a California smog test. The 383 will eat up more of the overlap and should be easier than the 355s.
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Old 06-21-2010, 08:25 PM
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yea i have that cam and i pass tx smog
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Old 06-21-2010, 09:42 PM
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Nice thx guys! I think I know what cam I'm getting!

Any of you guys passing smog with a mail order tune?
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Old 06-21-2010, 09:42 PM
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Nevermind I see old93 is doing it with a pcmsforless tune!
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Old 06-21-2010, 10:45 PM
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Custom tune for the Third Gens.
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Old 06-22-2010, 04:52 PM
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Originally Posted by old93camaro
yea i have that cam and i pass tx smog
What numbers did you put down? I had the same cam in my IROC's 383 and made around 430 to the wheels.
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Old 06-22-2010, 06:45 PM
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i'm going to get it dyno this week just put 100miles on it and got some problems worked out..
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Old 06-23-2010, 09:22 AM
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Originally Posted by old93camaro
yea i have that cam and i pass tx smog
how much you have HC in smog test?
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Old 06-23-2010, 08:44 PM
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Originally Posted by KimmoT
how much you have HC in smog test?
Lol um don't know would have to get back to you on that one
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Old 06-23-2010, 11:34 PM
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on a spot-on tune, I'd say possible.
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Old 07-20-2010, 09:45 PM
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Wanted to give you a little updAte on the xfi280 cam...well went to the dyno today and only could pull to 5k because major cluch slippage...have a new stage 3 CC clutch with less then 100 miles so he told me to put like 500 to
750 and come back and try again. Got to 378rwh so I see over 400 with a good pull to 6500rpm
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Old 07-20-2010, 09:46 PM
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Wanted to give you a little updAte on the xfi280 cam...well went to the dyno today and only could pull to 5k because major cluch slippage...have a new stage 3 CC clutch with less then 100 miles so he told me to put like 500 to
750 and come back and try again. Got to 378rwh so I see over 400 with a good pull to 6500rpm
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Old 08-11-2010, 07:29 PM
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Originally Posted by old93camaro
Wanted to give you a little updAte on the xfi280 cam...well went to the dyno today and only could pull to 5k because major cluch slippage...have a new stage 3 CC clutch with less then 100 miles so he told me to put like 500 to
750 and come back and try again. Got to 378rwh so I see over 400 with a good pull to 6500rpm
Nice! I'm going to have almost the same setup. Except le3 heads and le intake, eBay headers, and a ram HD clutch.

Let me know your numbers when you get them!
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Old 01-01-2016, 11:02 PM
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Originally Posted by Fazz73jr
Just as the title says. Have any of you guys passed a smog test with this cam?
Datz what im trying to figure out to i did a LT1 383 swap in my 3rd gen wondering if it would pass smog too ...
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Old 01-01-2016, 11:26 PM
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Zombie thread FTW!
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