1995 3406E rebuild or a 2003 C-15 MBN rebuild

Driver ran truck off road and over a pile of rocks, broke oil pan and locked the 1994 3406 E up tight. Number 3 sleeve is scratched, head appears ok, don't know if rods got hot enough to shrink them or not. Crank is junk. Before this the motor was a real screamer. Most powerful truck we've ever owned.

Mechanic wants to rebuild a 2003 MBN C-15 he has. He will transfer everything from the old motor that will fit. It does not have an ecm, nor a head. He's trying to tell me that this will be cheaper and be a better motor in the long run.

From what i read this motor isn't so good.

I'm for sending rods out to get checked, replacing the #3 liner, used crank, new rings and bearings all around, put the head back on and go on down the road.

Any suggestions or violent reactions?

Thanks in advance.

 

Yes, very quickly on him being a former in fact.......

 

Mechanic says not. He claims we'll run the old ecm, injectors, cam and related. I explained to him my concerns, he smiled and said "don't worry, I'll take care of you".......

I will add that's he's been a most trusted mechanic and has become a friend, so.

 

Yup, that's exactly what he wants to do and yes, those 'famous last words' lol.

 

That's part of why he said it'd be cheaper to do the C-15 block he had. Wouldn't need to do all that.