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Chevrolet 3500 Dually Gas to Diesel Engine Swap

I'd like to take a 1990s Chevrolet 3500 Silverado dually with the standard 454 gas engine and swap it out with a duramax diesel from a 2004 to now Silverado or Sierra HD.

Would that be possible to do and have registered and smogged for everyday street use? Seems like you guys would be all for that as the diesel is easily twice as clean as that old 454. Thanks!

Answer:

California only allows engine swaps when the engine and emission control systems being used are in an engine-chassis configuration certified by the California Air Resources Board (ARB) or U.S. Environmental Protection Agency (EPA). The engine you plan on using to convert your Chevy 3500 Dually from gasoline to diesel must meet or exceed the requirements for the year and class of vehicle in which it is installed. We recommend visiting California Air Resources Board to look up this particular diesel engine's California certification. If it's approved by ARB you'll be allowed to switch from gasoline to diesel. After the swap is complete the engine change must be inspected by an official referee station and must have a Bureau of Automotive Repair (BAR) Vehicle Identification Label affixed to the doorpost. posted by SmogTips Support

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