Emissions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rockman20 · 08-06-2004, 12:48 PM

Looking at Swervin's thread about new exhaust got me to wondering how emissions work. Up here in North Dakota, we do not need to pass any emissions, but any exhaust shop in town will not touch your vehicle if it doesn't have the emissions on it when it is suppose to have it.

So my question is this. How do emissions work for those of you who have to abide by them? I have a 1982 Chevy Scottsdale that was a 6.2L Diesel. It has a gas 350 in it now. So does the truck have to be a true diesel to pass emissions? If not, would the 350 have to have cats on it since it really started it's life as a diesel and didn't have them? I have always wondered about how something like this works.

Thanks!

**swervin ervin** · 08-06-2004, 01:18 PM

My engine is far from stock, with XE268 Comp cam. The rest of my stuff is emissions legal simply because I must have all the emissions crap hooked up even if it don't work. So if I have to bolt it up, I may as well have it working. It doesn't rob much if any horsepower. Just mostly looks like a turd in the engine bay. The cam is way past being emissions legal. But I pass emissions very easily. Way under the limit.

My understanding on engines is it has to be the same year/style of engine or newer. If newer, it must have all the emissions stuff from the newer engine. If you go older engine, it will have to have the stuff your year had. Now diesels don't have to do emissions tests. So, if you have a gas engine in your truck, it's really illegal. I guess you could do a test for the gas engine of the year it is. Here, they put your VIN in the computer and it tells them what they have to do. So if they type in your diesel VIN, they would know it wouldn't need an emissions inspection. If they were smart enough to notice the gas engine, if they wanted to be a ahole, they could probably turn it down. I'm not sure what you would have to do to get it to pass in this case.

It's a bunch of crap I tell you. But, you do what you have to do and move on.

cliffsta · 08-06-2004, 03:56 PM

Here in my town (i'll keep it secret) i don't think they do emissions test, they just check for a cat when you get your inspection sticker. But there are plenty of places that don't even come outside to look at your vehicle; you give em the 10 bucks for a sticker and they slap it on. Oh and i do believe my dad unhooked all the smog stuff years ago on ol red, or did he

heh heh

08-06-2004, 12:48 PM	#1
rockman20 "The dude abides" Join Date: Apr 2003 Location: North Dakota Posts: 472	Emissions Looking at Swervin's thread about new exhaust got me to wondering how emissions work. Up here in North Dakota, we do not need to pass any emissions, but any exhaust shop in town will not touch your vehicle if it doesn't have the emissions on it when it is suppose to have it. So my question is this. How do emissions work for those of you who have to abide by them? I have a 1982 Chevy Scottsdale that was a 6.2L Diesel. It has a gas 350 in it now. So does the truck have to be a true diesel to pass emissions? If not, would the 350 have to have cats on it since it really started it's life as a diesel and didn't have them? I have always wondered about how something like this works. Thanks! __________________ RockMan 1993 Chevy Silverado C3500 1 ton dually 1994 Honda Civic 1969 Oldsmobile Cutlass S 1953 IH Farmall Super M New to the fleet: 1992 Subaru Loyal

08-06-2004, 01:18 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	My engine is far from stock, with XE268 Comp cam. The rest of my stuff is emissions legal simply because I must have all the emissions crap hooked up even if it don't work. So if I have to bolt it up, I may as well have it working. It doesn't rob much if any horsepower. Just mostly looks like a turd in the engine bay. The cam is way past being emissions legal. But I pass emissions very easily. Way under the limit. My understanding on engines is it has to be the same year/style of engine or newer. If newer, it must have all the emissions stuff from the newer engine. If you go older engine, it will have to have the stuff your year had. Now diesels don't have to do emissions tests. So, if you have a gas engine in your truck, it's really illegal. I guess you could do a test for the gas engine of the year it is. Here, they put your VIN in the computer and it tells them what they have to do. So if they type in your diesel VIN, they would know it wouldn't need an emissions inspection. If they were smart enough to notice the gas engine, if they wanted to be a ahole, they could probably turn it down. I'm not sure what you would have to do to get it to pass in this case. It's a bunch of crap I tell you. But, you do what you have to do and move on. __________________ Mike 1985 Chevy C-10

08-06-2004, 03:56 PM	#3
cliffsta Stepsides RULE Join Date: Jul 2004 Location: Pineville, LA Posts: 1,921	Here in my town (i'll keep it secret) i don't think they do emissions test, they just check for a cat when you get your inspection sticker. But there are plenty of places that don't even come outside to look at your vehicle; you give em the 10 bucks for a sticker and they slap it on. Oh and i do believe my dad unhooked all the smog stuff years ago on ol red, or did he heh heh __________________ 1981 Chevy C10 Custom Deluxe Stepside 350 V8, headers, side exhausts, 3-speed auto SOLD 1980 Chevy C10 Custum Deluxe Stepside 305 V8, Edelbrock Performer Intake, Edelbrock 1406 600CFM 4-barrel, TH350C. Bent rod. SOLD 1984 GMC Sierra Classic Longbed 6.2L Diesel SOLD 2009 Kawasaki KLX-250S too many mods for this signature 1999 Honda Accord EX 4-cylinder, 17" Motegi Wheels 215/45/17 Sumitomo tires, Tein S-Tech lowering springs, KYB GR2 shocks, Acura TL 20mm rear swaybar, debadged, blackhoused headlights, Short-Ram Intake Cardomain of the Accord



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