427 Mack engine

[Walt1967]

Hi guys.currently looking at a 2001 Mack ch truck has a 427 Mack engine w/18 speed Mack,and Mack rears. will this motor hold up to pulling 154000 gross,(gravel trains in michigan).has 296000 miles right now.truck has double frame heavy front also.is it comparable to a 425 cat? Or something else.

[BoxCarKidd]

 427 Macks are pretty tough but the early ones had some cam problems. The Cat will probably walk the dog on your Mack a little if all other factors are equal. Dog should be more economical. If I found a 2001 with documented 296,000 miles at a good price I would just have to buy it. Just wave every day when you go past that broke down emission junk even if you are not king of the hill.

  Some of your questions are hard to answer in a way most people can relate to. The Mack is a semi long stroke engine compared to bore. A long stroke engine will work its heart out for you. Its heart is big so it can do that for a long time. Popping johns ( two cylinder John Deers ) helped make America. A G  model was 36 HP at 1750? 413 CID two cylinder. It would run a baler rated for 60HP minimum almost forever. So if a pick up truck diesel can be cranked up to 1,000 HP and be driven all over the country why don't we just put them in all our big trucks? It will increase pay load. Because they do not have the heart. 

   JMHO  We do not know what the Cat is in or how it is speced. 3406's are good engines.