Detroit 11.1

Exactly what they told you. Much over that and you sacrifice efficiency and your fuel mileage suffers. If you want more power after that you have to change your turbo, cam, and put bigger injectors in it.

 

Know of 3 right now. That was built in east Tn. Put in gliders and have been nothing but problems. Being there all 3 11.1 blocks. Without piston coolers. These engines were built to a 500 HP engine. Pulling 88000 most times..
All three of these trucks have issues. Where the other 5 built with later blocks 12.7's have no issues.
You can build a 12HP Briggs lawnmower motor to 40 HP. But its not going to last long.

 

Yes but not a 11.1.

 

He said it's a 2000. That means that if it doesn't have piston coolers, the holes are there for them. If there's 3 of them built by the same shop having problems, I'd be looking at the shop. If a 12.7 can run at 750hp every day, and a 14L can run at 900+, theres no reason an 11.1 can't run 500-550.

 

Sounds like you have a good plan makes sense. Please update after upgrade. I’m looking to up my 12.7 a bit

 

Yes I did see it was a 2000. But there was no 11.1 Detroit made in that year Truck. 11.1 Detroits ended with the year 1997. 12.7 yes but Detroit had dropped the 11.1 before then.
Shop happens to be Fitzgerald gliders the engines are in. And the blocks are the older 11.1's that did not have the holes for piston coolers.