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Re: What year did emissions come standard?
I know for a fact my '77 3/4 ton, 6300 gvw had no cats factory, just the PCV system. No vapor canister, no A.I.R. pump, nothing. My uncle bought it new and it was titled as the weight of 4483. (commercial pickup truck).
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"Mr. Simpson, there are thousands of people like you with no discernible talent." Duff World Records Division
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Last edited by ToughBowtieTruck; 01-29-2010 at 10:14 AM.
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