Quote:
Originally Posted by USSkoval
Yeah, I have two 4wd 77's that originally had dual exhaust and I don't believe either had cats originally. I had a '79 2wd Blazer with single exhaust, and IIRC, it had a factory cat.
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Your correct, I had a 78 also with no cats, I believe 79 was the turning point, I know my 80 had cats.