Any Old FL COE/Cummins Experts?

K series has 6 heads and valve covers. N has three heads and valve covers. A lot can happen in forty years and look original.

 

Kind of guessing the NTC450 was a twin turbo, special order. The intake and exhaust had to be custom built because it was not a standard assembly line truck.

 

I'm kinda agreeing w/boxcar....but most 450's would'very been a NTTC450 w/twin turbo. I've only seen & driven one...& it was a FL.

 

Go here,
https://quickserve.cummins.com/info/index.html

Create an account,(It's free)
type in the ESN (engine serial number) & all will be revealed..

 

I believe its going to be an NTC 450? Unless "deviated" means modified? The 74 Pete I drove had an NTC 400 in it, which just meant it was a 400 hp cummins. I drove another pete (72 I think?) that had an NTC 350 in it. Maybe the K number is a line number or sequence number or something? Maybe a nomenclature number kinda like the 238 detroit was called a 6-71 detroit ( 6 cyl) and the 318 detroit was called an 8-71 detroit (8 cyl)? 71 being the actual model number of the engine. The K number is probably the model number of the engine?

 

Only Twin turbo Cummins I can think of in that generation was the ntc 475, however I'm almost positive its a formula 450 should have the formula sticker somewhere on the motor..

However don't hold me to that as my parents were just out of Diapers when this truck was hauling, and I can only go off of old shop manuals that I have and what I hear from the Old Timers I talk to.

if you really want honest answers from people who live and breathe the old Trucks.. post this up over on the American Truck Historical Society's Forum.

Love that Canadian Spread axle though.

 

That serial on the plate is for a K series, and a very early one at that.

There were no NT engines rated at more then 420hp at that time, the 475 didn't come out until the BC2 series.

That needs to be restored as is.

 

I don't believe that truck will even run the 55mph speed limit with 4.63 rears and a non overdrive 15 speed.