1988 turbo issues

The most common one for that engine is the HT3B. Holset or Schwitzer (now Borgwarner) part # 196800.

 

If it’s truly a 400.... there seems to be more 400 Cummins than Carter has liver pills.

When I bought my W900L Glider I was told the replacement engine was a 400, took a injector out to check the part number, then pulled a head to check the piston part number....

Turbo / Injector / piston all came back for a 315-350 horse engine.

that’s why I usually go with the pump code lol, but it could be like mine made of different CPL numbers

 

Yeah. No kidding. Everything is a 400.
I did notice the truck body tag says it’s supposed to be a 444.
The 196800 was the go to for the replacement for 290’s up to the 444’s for many years and is still available. So it couldn’t hurt anything and he shouldn’t go wrong with it. Works better with a dual outlet pulse manifold but it is not required. I have noticed that it will even show a little manifold psi sometimes with the Jakes on. 7 psi at most.
The one I have on my sc 350 came off a bc 290 that was built to a 400. Probably a million on it and still blowing. Lol!

 

Give me a few hrs. To get into one of my storage trailers. I’ve got a formula 350 with that same after cooler on it. Let me look and see if it had a gauge in the truck it came out of and where it was plumbed in if it did.
Might be in the morning

 

Been a long time so I can’t remember either lol, but thinking it’s here...?