Cummins ntc 335

An NTC 335 Cummins was a 290 that someone rebuilt with a 350 fuel pump and injectors and turbo. without cpl numbers I would go out on a limb and say it is probably a small cam engine originally built at 290 hp specs

 

There were factory built 335s.

OP what would you like to know about it?

 

were good motors but never had a glow plug

 

No glow plugs, it may have had intake heaters but they are direct injection.

Besides being a small cam there isn't a whole lot of difference between that and the newer big cams, they made some changes to to the crank and it likely has higher compression pistons and advanced timing, but those engines didn't run a lot of fuel.

 

Had a 335 in my 1973 KW Cabover back in the 80's. Did a good job. And no it didn't have glow plug. Take care of it and it will do what you ask of it.

 

Cummins is a steady RPM engine. Not so much torque or horsepower. It's roots actually come from the bigger engines that drove ships at sea a long time ago. It likes to run all day at 65 or whatever provided you had the gearing and final drive ratio to keep it moving in the area you are in.

I pretty much exhausted what I know about this engine, not the 335 in particular, Ive run a number of engines below and above that rating over the years. Some were quite... obstinate in it's habits let's say...