catalytic question

edpdx · 10-20-2008, 04:40 PM

I bought a 76 LT from a guy months ago. I got it registered and all. The DMV says I have to have a DEQ (smog check) before I renew the reg again.

No problem since it runs like a top. I get to the inspection station and the guy say I'm blowing too much Hydrocarbon...AND I need a catalitic converter. Sure enough, there is none. I guess the guy had it registered out of the area where they are required in this state (the smog check, not the cat. conv.).

So I want to put cats back on. It seems that after so many years, the DEQ says you dont have to get the check anymore. I gotta be close by now; but I digress.

The LT now has dualies straight back. Headers, straight pipe, muffler, up-over-out. So what is the best thing to do here:

Bite the bullet and run it to the exhaust guy for a new sysytem
cut the existing system at home and clamp in a couple of cats from the yard
remove the present dualies and buy a system that collects to a single cat then run a single pipe until I no longer have to have inspections

I just as soon go to the muffler shop as I am going into the rainey season and I have only a gravel driveway on which to work; but I fear the sticker shock. Any ideas what this work would run? Alternately is the yard scrounging idea a sound one?

Thanks,

Ed

BWAL09 · 10-21-2008, 02:03 PM

where do you live? around here, if a vehicle is more than 25 years old it doesn't have to be inspected anymore

i think if you have good catalytic converter(s) and can weld, your best bet would probably be to weld them on if you have plenty of room to work.. it would be cheaper that way, but taking it to an exhaust shop would be easiest

10-20-2008, 04:40 PM	#1
edpdx Look Ma, My First Post! Join Date: Oct 2008 Posts: 1	catalytic question I bought a 76 LT from a guy months ago. I got it registered and all. The DMV says I have to have a DEQ (smog check) before I renew the reg again. No problem since it runs like a top. I get to the inspection station and the guy say I'm blowing too much Hydrocarbon...AND I need a catalitic converter. Sure enough, there is none. I guess the guy had it registered out of the area where they are required in this state (the smog check, not the cat. conv.). So I want to put cats back on. It seems that after so many years, the DEQ says you dont have to get the check anymore. I gotta be close by now; but I digress. The LT now has dualies straight back. Headers, straight pipe, muffler, up-over-out. So what is the best thing to do here: Bite the bullet and run it to the exhaust guy for a new sysytem cut the existing system at home and clamp in a couple of cats from the yard remove the present dualies and buy a system that collects to a single cat then run a single pipe until I no longer have to have inspections I just as soon go to the muffler shop as I am going into the rainey season and I have only a gravel driveway on which to work; but I fear the sticker shock. Any ideas what this work would run? Alternately is the yard scrounging idea a sound one? Thanks, Ed

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10-21-2008, 02:03 PM	#2
BWAL09 MA Editor / Moderator Join Date: Mar 2008 Location: Powder Springs, Georgia Posts: 967 Blog Entries: 1	where do you live? around here, if a vehicle is more than 25 years old it doesn't have to be inspected anymore i think if you have good catalytic converter(s) and can weld, your best bet would probably be to weld them on if you have plenty of room to work.. it would be cheaper that way, but taking it to an exhaust shop would be easiest