Join the community and post your question. Use our Ask-A-Tech for free now! ASE experts standing by.

Forum > General Smog Check > Question

1980 Ford F100 Engine Rebuild

Will my Ford truck pass smog if I rebuild my Ford engine with some performance products for example an engine with slightly bigger pistons and a smoother head and different carburetor?
Answer:

You can rebuild your Ford F150 engine but only using engine parts built for your Ford truck. No modifications can be made to it. You don't have to use original Ford engine parts, but whatever parts you do use have to be built for your Ford and have an EO (executive order) number on them. The EO number shows the smog station or smog technician that the parts you used are designed for your Ford. Bigger pistons are definitely out of the question. Though it would be difficult for a smog station to find out you've rebored your Ford's engine, more then likely, emissions will increase and you'll fail the smog test there. Plus, and most truck owners don't necessary follow this law, but once any engine is rebuilt a smog check referees office needs to conduct the smog test only. Once the truck passes the smog referee's test it is issued a blue tag indicating the engine job was done properly and it does not pollute. posted by SmogTips Support

Related questions and answers you might find useful:

How Do I Get a Smog Check Waiver? by Margaret

Do I Need a Smog Check This Year? by Joy

Mini Cooper DMV Registration Due in 5 Day Won't Pass Smog by anne

2001 Jeep Grand Cherokee Laredo with K&N Air Filter by David

1995 BMW M3 Gross Polluter High HC & NO @ 15MPH by Jared

View SmogTips.com in: Desktop / Mobile