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Toyota00 · 05-21-2008, 10:49 PM

We just got a 1981 3/4 ton GMC with a 454 in it. It has no cats on it, or smog equipment and down here in Las Vegas, Nevada it is required to be smogged.

I have been looking for engine diagrams and info, and can't seem to find too much.

My questions are
what is all the stock smog equipment that goes on a 454?
and where can I find it?

Thanks for any and all help!

O and what would be the best cats to put on it for a good price?

05-21-2008, 10:49 PM	#1
Toyota00 Registered User Join Date: May 2008 Location: Vegas Posts: 4	Smog Help 81 with a 454 We just got a 1981 3/4 ton GMC with a 454 in it. It has no cats on it, or smog equipment and down here in Las Vegas, Nevada it is required to be smogged. I have been looking for engine diagrams and info, and can't seem to find too much. My questions are what is all the stock smog equipment that goes on a 454? and where can I find it? Thanks for any and all help! O and what would be the best cats to put on it for a good price?