Best cat engine to purchase in used semi?

I am happy with my 3406B. Get 6.5 mpg constantly. Cheap to work on and NO ELECTRONICS that's what I like about it!

 

I had a 3406 b early in my career- Great motor 350hp and never let me down
I Currently run a c-12 @430 hp- Do an overhead every other year- swap out a water pump or 2 and she'll be good to ya

 

Old 1693TA,best Cat IMHO.Probably aren't many around anymore.

 

3406B was as good as a truck engine gets. The only Cat engine i ever knew to be a problem child were the 3406C PEEC engines. A C with a full mechanical pump would be good if you found one, but the ones with an electronic governor section were poison. The only problem with a mechanical Cat is they are NOT idiot proof even with factory fuel settings, and that only got worse if they were fuelled up.

 

3406B Fuel mileage was good and in the 5 years I never had a issue with the engine. Easy to service.

 

You must not get out much if you don't hear anything good about the 3406's.

 

C-13 is a great little motor if you can find someone that knows what to do with the acert part