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B. W. · 03-29-2017, 10:07 PM

The 366 is a small big block. It came in the C40,50,60 class trucks(maybe only 50,60? not sure) it is a commercial/industrial engine. (you probably already knew all of this!) My experience with them is they were really robust & performed well. We used them in ag applications & ran them hard with extended service intervals in poor conditions. With that said, I would put a 350/383 small block in or a 454 before using the 366 due to parts availability, HP to CID to weight, etc.

03-29-2017, 10:07 PM	#2
B. W. Registered User Join Date: Nov 2014 Location: Bigfork, Montana Posts: 1,137	Re: Anyone have a 366 truck??? The 366 is a small big block. It came in the C40,50,60 class trucks(maybe only 50,60? not sure) it is a commercial/industrial engine. (you probably already knew all of this!) My experience with them is they were really robust & performed well. We used them in ag applications & ran them hard with extended service intervals in poor conditions. With that said, I would put a 350/383 small block in or a 454 before using the 366 due to parts availability, HP to CID to weight, etc.