Re: 350 swap..... (header questions)
I was able to pass without a lot of my emission stuff. I don't think there was one piece of emissions (no egr air pump or anything) installed besides catalytic convertors (two) for my dual exhaust. I did fail a few times because the catco convertors stopped working. I replaced them with new ones and it came back with really really low numbers.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73
1992 Camaro RS 305 TBI
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