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*78 Chevyrado* · 01-29-2010, 12:19 AM

I'm not sure when 1/2 tons got cats, 75 or 76 I think. as for 3/4 tons, they didn't get cats, etc until 79. up to 78 everything with a GVW over 6001lbs. was emissions exempt. 79 and later, you had to have a GVW of 8501lbs to be exempt. Basically that leaves dually's and their 10000lbs GVW exempt but I don't know when that ended.

01-29-2010, 12:19 AM	#7
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: What year did emissions come standard? I'm not sure when 1/2 tons got cats, 75 or 76 I think. as for 3/4 tons, they didn't get cats, etc until 79. up to 78 everything with a GVW over 6001lbs. was emissions exempt. 79 and later, you had to have a GVW of 8501lbs to be exempt. Basically that leaves dually's and their 10000lbs GVW exempt but I don't know when that ended. Last edited by 78 Chevyrado; 01-29-2010 at 12:19 AM.