cummins bc vs. cat

A 400 big cam is 400 horsepower, anyone saying different doesn't know any better. A 425 cat is 425hp. People just don't realize that's what it means I guess and they call every big cam or b model cat by that name. You can turn the fuel up a little on either motor and still be reliable and have plenty of power. Rpms is dependent a lot on gearing of the truck what kind of weight your hauling and how the engine is set up. The older motors need a little more rpm than computer controlled ones. Around 1500 cruising is what I like to see on my trucks. It comes down to personal preference a lot, both engines will do you a good job and the older style electronic engines like the 3406e n14 and series 60 pre egr will all do a great job as well.

 

A properly set up old Cummins is nothing to be ashamed of. You may need to rebuild them earlier than an old Cat but they are dependable, cheap, and easy to fix. On a limited budget I would take an old comapart before an old Cat any day. Nothing better than blowing off some guy's mirrors with something he never expected. If you live or work in a communist or tree hugger state you may need to think differently.

 

Cat rates hp off the ground. Cummins rates hp off the flywheel.

 

Please explain who told you that? I would like to correct them and correct you and say that's wrong and I will guarantee it. It's impossible to rate off the ground win any accuracy. Cat and cummins make engines and not transmissions or rearends. Really obnoxious when people post on here obsurd misinformation.

 

WRONG!

 

its flywheel horsepower, there may be some rare exceptions but in general it is flywheel horsepower

 

That's what ive always been told.

 

Like I said, by who? Be sure to relay the message to them to quit saying that and spreading lies

 

Maybe in the 70s with the 1693 to cheat the insurance a little, but not these days, all engines are rated at the flywheel, that is the only consistent way of repeating results.