Mechanical N14

Sounds like a good platform to build a very reliable, ease of maintenance engine. Air to air, with mechanical PT pump, sounds like you might get 500-550hp, with the right tuning.

 

I’d move on. Have a friend with a 1992 FLD with that motor. Wrong gears, farm truck, sunk 40k into it and sunk his business plan of OTR.

I’ve driven it a few times, can’t be turned up without damage and it’s a boggy pig.

Now the 2001 KW with an N-14, solid motor.

 

Mechanical n14 is a great engine.

I know they had a lower horsepower version that was made to be a lower horsepower but I think that was around 300.

The 350 I wouldn't even worry about that I would just use it that's plenty for I-80. I'm sure you could get at least 400 safely if not more.

If you really want an answer or go on to the Cummins 855 enthusiast Forum on Facebook someone there will be able to answer the question.

Most likely it set up similar to a big cam. Probably just slightly higher compression Pistons the timing is quicker the injectors are smaller and the Turbo is probably similar if not the same.

The gearing of the truck itself will have a lot more to do with the power really then that engine. That engine is 100%.

Just to give you an example I have a big cam 350 horsepower that regularly goes through the Pennsylvania Pocono Mountains and I have no problem.

If somehow you end up not interested in that truck let me know. Not really looking for another truck right now but a nice truck with that awesome N14 would be something good to have.

You can p.m. me if you like.

 

In a 91 wouldn't that be a big cam III? I know they are basically the same but... or am I wrong

 

I ran the mechanical N14’s for several years in the CaseIH Steigers and they were from 350-400hp. Tractor engines are set up different than truck engines. Very solid engine, that I wouldn’t hesitate to have in a truck.

 

No the series went Big cam 3 big cam 4 then NT88 and then mechanical n14.

They were all similar but different, built on the same 855 platform.

 

Weren’t the 444’s the NT88 series, with the STC pump and low flow cooling system?

 

Around the ‘89-‘90 time frame Cummins Southern Plains was testing some of the first N-14’s in a fleet of 24 GMC/White/Volvos and a couple FL’s run by a large Texas based grocery co. in San Antonio. They had just started getting away from big Ford cabovers a few years before this. These were truly mechanical because they had the old style small cam through bc 3 high flow aftercoolers on them. No manufacturer was interested in redesigning the front end of their trucks at that time for air to air except Paccar. Paccar was the manufacturer that really forced them to go towards air to air. Some of those engines ended up scattered around South Texas after the trucks were retired and sold at local auction. Most were local rock trucks for years afterwards.