nta-370 vs ntc-350?

[fantacmet]

So I have the Kenworth COE kit, and notice it has the NTA-370. Might this be a better choice for the high powere heavy haul than the NTC-350?

[Modelmikey]

Not sure how much better a 370 is then 350, 20hp on a big diesel doesn't tell the whole story. I've heard old drivers say a 300cummins would out pull 350 on a hill. I think in the early 70's that was about it for big power, cat was just coming of age. If your going for a vintage heavy hauler tractor, a 12V71 Detroit would have been a good choice.

[Fat Brian]

The 370 is aftercooled versus the 350 have the turbo piped straight into the intake. Look up the power rating for each engine and specifically look at the torque rating at various rpms, that will tell the true story of which engine is the better puller.

[fantacmet]

It's not so much a vintage heavy heauler as it is, ssupposed to represent maybe late 90's early 2000's, maybe current day, someone who took an older rig, and rebuilt the entire thing, adding his own extra axle, his own stretch, etc. As such he uses it for heavy haul, because he doesn't like all the modern plastic, he likes classic trucks with a bit of a show style.

[Force]

If you are doing 70's style you could use a 425 hp Cat 1693TA, (available from KFS), or a DD 12V71 of similar hp rating (available from some resin casters).

For more modern you could go for a Cummins NTC 475 Twin Turbo (Revell Peterbilt 359 and KW K100), a Cat 3408 (Revell KW W900) or maybe doing a 3412 from 2 3408's, or a Cummins ISX 600 (available from Auslowe).

Edited April 4, 2015 by Force

[fantacmet]

Unfortunately at this time I'm not in a position to purchase any resin or anything else. Gotta use what I have.

[Fat Brian]

After some research the 350 is the way to go. The NTA series was a short lived and troubled branch on the Cummins tree that didn't last through the 70's. It's not an accurate choice for a 90's repower where a rebuilt NTC-350 is much more likely. What is the issue you're having getting the Cat in there because that's really the way to go.

[Force]

There are visual outside differences between the NTA and the NTC but If you tweak the aftercooler a bit to look like the later style the NTC 350 can go as a 400, the outside apperance is pretty much the same.

I know you're not in the position of buying resin engines but I forgot to mention for the 70's style in my first post, the Cummins KTA 600, a 19 litre 600 hp beast that could pull almot anything (P&P Resins had one).

Edited April 5, 2015 by Force

[fantacmet]

I have the cat for the KW W900, snap kit. Can't quite make it work, especially since I have the chassis all painted up now. Now about that aftercooler idea.....Pics between the two? If it's not too bad I might be able to do it.

[Force]

Early style aftercooler.

Later style aftercooler

Edited April 5, 2015 by Force

[fantacmet]

Assuming I['m looking at the right part, that should be EASY! Looks like a radiator top.

[Fat Brian]

That's right, the difference is pretty minimal.

[Force]

Yes it's quite easy, the bottom part is the same so it's only the top part that needs to be modified.

[fantacmet]

I think I have the perfect radiator to rob the top from, if not it's still easy enough to make.

[lapazleo]

The nta 370 also has a verticle oil cooler unique to the nta series where as the ntc oil cooler is horizontal.