Peacock
Platinum Member
My experience with Cat is limited. But I can say I was less than impressed with what I've seen. The 3126 engines put in F-series trucks and school buses just don't have the grunt of the B Cummins. They operate pretty similar to the 7.3 and 6.0 in that respect. I can also recall that they seemed to have an alarming amount of blow by before 100k miles.