Originally Posted by jenandjon
I'm shopping for a Diesel Pusher. We are a couple years away from pulling the trigger. Anyway, The ones in my price range are going to be anywhere from a 1995 to 2001 or so. I want a pusher because It will be an older coach and I want the dependability of a diesel. I can do all the maintenance myself and I know how expensive parts are.
To get back to the question. What are the ups and downs to having a CAT or Cummins. I have been around cummins alot. I ve never worked on a CAT engine.
Is there any reason to skip over the ads that say it has a CAT engine?
Are the cummins in the older DPs the same as what they put in the dodge pickups?
Very little difference in performance. Both companies build well engineered engines. The ISB Cummins is the economy champ and the least powerful of the engines historically found in coaches. The Cat 3126/C7 is next up on power but not particularly known for economy. From a drivability standpoint a true compression brake is available in the Cummins ISL and larger. The Cats don't use the true Jake until the big C12/C13 which are true heavy haulers and only used in a few top end coaches.
Most of the small Cats are available with rear radiator placement which is somewhat less desirable but less complex than side placement. Cummins ISL and larger are usually found with side placement radiators.
The Cummins ISB is sometimes paired with the smaller Allison transmissions (1000/2000/2500). Some are 5 sp and some are 6 sp. Look for the Allison 3000. It's always 6 sp and very strong and trouble free.
Full time since '07