I have a 91 Ford Water truck with a New Holland 6.6 Liter engine in it. I have to submit the engine family online but I cant seem to locate it on the truck. Does anybody know what the Engine Family Number is? I was told by someone that it is "6.6.litre New Holland 401" but the website I'm entering it on is saying that it's incorrect. Thanks for the Help!

 

Might be a better forum to ask here at FTE:

Large Truck - Ford Truck Enthusiasts Forums

Welcome & good luck.

 

the 6.6 diesel is what we refer to as the "Brazilian diesel" engines 6.6 and 7.8 liter diesels.

 

6.6 was medium duty chassis I believe. IIRC they were common in school buses.

 

also in the F650 and F750 trucks.